I recently recorded an audio podcast
about Collaborative Development and Operations (DevOps) and how it relates to Disciplined Agile Delivery (DAD)
. The podcast is 17 minutes long and covers a range of topics including:
- What are the challenges typically faced by Disciplined Agile Development teams as they begin to transition their working solutions into production?
- How best could this gap between Development and Operations be closed so that they worked collaboratively rather than in silos?
- If this DevOps gap was decreased or even closed, what would the measurable value be to Agile projects and their business stakeholders?
On a related note, IBM's Collaborative Development and Operations
landing page has some great resources if you're interested in how to implement.
My new white paper, Disciplined Agile Delivery: An Introduction
, is now available free of charge from IBM.com. The paper overviews the Disciplined Agile Delivery (DAD) process framework, a hybrid comprised of strategies from Scrum, XP, Agile Modeling, and other agile methods which is people first, learning oriented, and enterprise aware. DAD is the basis from which you can scale agile.
- Context counts - The Agile Scaling Model
- People first - People, and the way they interact with each other, are the primary determinant of success for a solution delivery project.
- Learning-oriented - The DAD process framework promotes the ideas that team members should collaborate closely and learn from each other, that the team should invest effort to learn from their experiences and evolve their approach, and that individuals should do so as well.
- Hybrid - DAD adopts and tailors strategies from Scrum, XP, Agile Modeling, UP, Kanban, and many others. It addresses many of the issues Mark Kennaley discusses in SDLC 3.0.
- IT solution focused - DAD teams produce potentially consumable solutions every construction iteration. This extends Scrum's "potentially shippable" strategy to explicitly address usability/consumability plus the fact that we're really delivering full solutions not just software.
- Goal-driven delivery life cycle - The DAD lifecycle is focused on delivery, not just construction. Furthermore it is goals-driven, the DAD process framework suggests various strategies to fulfill those goals but does not prescribe specific practices.
- Risk and value driven - The DAD lifecycle is risk and value driven. It extends Scrum's value-driven lifecycle which produces potentially shippable software each sprint/iteration so that it explicitly includes light-weight milesstones such as ensuring stakeholder consensus as to the scope of the project early in the lifecycle, proving the architecture with working code early in the lifecycle, ensuring sufficient functionality exists before transition, and ensuring production readiness before actual release of the solution.
- Enterprise aware - The DAD process framework promotes the ideas that DAD teams should work closely with their enterprise architecture groups to ensure they leverage and evolve the existing infrastructure, adopt and follow corporate guidelines, and work to the overall organizational vision. DAD teams are self organizing with appropriate governance.
I recently did the voice over for our Rational.Everyware Agility@Scale whiteboard video
, which is a bit less than 4 minutes in length. As I narrate a whiteboard sketch evolves, sometimes using sticky-notes and index cards, to help explain what I'm talking about.
In the video, I describe:
- The history of agile
- Some of the challenges surrounding traditional development
- Some of the basics of agile, such as increased collaboration with stakeholders and on delivery of consumable solutions
- The benefits of agile, including increased quality, time to value, stakeholder satisfaction, and ROI
- Domains where agile is being applied successfully
- What IBM agility@scale is all about
- How some of the scaling factors change the way that you'll work and approach tooling
- Rational Team Concert (RTC), what it is and why you'd be interested in it
- Benefits that customers are seeing with RTC
- How you can download a fully-functional version of RTC for a team of up to 10, with no time limit, free of charge
So, it's basically a cool marketing video for a bunch of free stuff.
I'm happy to announce that I've accepted the role of Managing Director of the Scrum Alliance
(SA), a part-time position in addition to my duties here at IBM. On the surface this must appear to be a radical and unpredictable departure for me, considering my history of being critical when it comes to some of the past activities of the Scrum Alliance. To be fair, I've actually been critical of the Certified Scrum Master (CSM) scheme
, and rightfully so. But I have also actively embraced the good ideas contained in Scrum and have incorporated them, with attribution, in my writings about Disciplined Agile Delivery (DAD)
and other agile topics. I believe that I've made this very apparent in this blog and in other sources such as the Agile Modeling
site. So, it really isn't such a radical departure for me afterall, although still arguably one that was difficult to predict. In fact, one of the reasons why the Scrum Alliance approached me to be Managing Director is the fact that I have been critical of many of the Scrum community's behaviors.
So, over the next few months you're going to see what I believe to be some welcome changes at the Scrum Alliance. Our first step at serving you better will be to apply agile strategies and principles in the way that we work. Importantly, we'll be taking a three pronged strategy based on respect, clarity, and integrity. We have dubbed this strategy "Scrum Alliance 2.0".
To be more respectful of existing and potential SA members, we will begin executing the following activities:
- Adopt respectful language on the site. We've begun a review of the SA web site to identify potentially disrespectful language. For example, on the About page we indicate that Scrum trainers pay for your first two years of SA membership fees. Who do we think we're kidding? Those fees are clearly coming out of the money that you paid to take the training and we shouldn't hide this fact. I believe that our improved clarity strategy, see below, will go a long way to increasing our respectfulness towards others.
- Tone down the rhetoric. There's been a lot of rhetoric espoused over the years regarding Scrum, which is true of many other issues within the IT industry and not just Scrum. From now on any rhetoric that we do promote we're going to actually live by. For example, not only are we going to claim that Scrum increases visibility (which it can in fact do) we're going to be an examplar of that by being open ourselves. More on this below.
- Deprecate the chicken and pig analogy. Calling people chickens and pigs may be fun at first, and to be fair the analogy helps to cut through some of the politics surrounding many project teams, but the terminology is in fact disrespectful. We can and should do better.
Clarity through openness and honesty
We are also starting to execute on four activities for improving the clarity of how we operate:
- Be crystal clear about what "not-for-profit" actually means. This is a wonderfully deceptive term from the US tax system which can make organizations appear far more virtuous than they actually are, which is particularly easy in situations where the audience doesn't have a sophisticated knowledge of finance. Not that I'm implying anything. Although we have taken some steps to explain the implications of what being a "not-for-profit" organization means, we could do a lot more by being less self-serving. Yes, the SA isn't a for-profit organization. The implication of this being that we need to spend the money we rake in, but it doesn't imply that as individuals we can't make a lot of money via our SA work. I'm not taking on the position of Managing Director for free after all, and I'm sure that previous MDs have found the position lucrative.
- Publish our salaries. To live the high standards which we espouse through our rhetoric, we're going to be very clear about the way that we operate. This includes publishing the salaries of the employees of the SA and the revenue derived from Scrum training of all of our certified trainers. Part of being respectful to our membership is to be clear about how we spend their hard-earned money.
- Publish how we spend the rest of the money. After we pay ourselves, how much do we really spend on supporting user groups, education, and research as we claim? Don't you think you deserve to know? I certainly do, which is why we're going to ensure our finances are no longer opaque. With tens of thousands of members and/or "certified masters" running around out there, it's pretty clear that we making a lot of money. To guarantee that money is being spent appropriately we're going to share with our membership where it's coming from and going to.
- Publish our meeting minutes. This will be both in written form, e.g. traditional meeting minutes, as well as recorded form (ideally video but at least audio). The only way that our membership can be assured that we're working in an ethical and integral manner is through complete visibility into our operations.
The fundamental idea here is that the Scrum Alliance should have nothing to hide from our membership. We've preached open and honest communication for years, now we're going to start actually living by those words. Yes, it may be a bit painful to work to this level of clarity, but we feel that you deserve this.
Integrity through actions, not words
Finally, we're taking three actions to increase the overall integrity of the Scrum community:
- Increase investment in research. Although we've big claims about support Scrum research over the years, very little has actually come of this due to lack of funding (see discussion of salaries above) which can be seen in the serious lack of research results posted at the SA site. Of the six publications at the site tagged as research results, three were performed by Carnigie Mellon University, the home of the Software Engineering Institute, producers of the CMMI. Although I personally respect the work surrounding the CMMI, not that I agree with all of it, I'm concerned about relying on CMU for half of our Scrum research results. We can and should do a lot better, and the first step is to divert some funds away from our own pockets into research. Having actual empirical results, as opposed to espousing rhetoric about empiricism, will go a long way towards more respectful behavior via actual fact-based discussions. Until then, you may find my IT Survey Results page to be a valuable resource.
- Deprecate the Certified ScrumMaster (CSM) certification. Although I would prefer to end this embarrassment immediately, we need to be respectful of the fact that CSM courses have been scheduled several months in advance and some people have already paid for seats in them. So, as of June 30th 2011 the CSM certification will be deprecated. This should give our Certified Scrum Trainers time to rework their business models and focus on more respectable activities.
- Existing CSMs must clarify the certification. People who have previously "earned" the CSM designation will be grandfathered in until December 21st, 2012 in accordance with the Mayan Calendar. However, until that time all CSMs who choose to indicate their designation publicly (many CSMs choose not to) in email signatures, business cards and so on must now use the following wording - "Certified ScrumMaster (earned by staying awake during a two/three day training course)". This wording reflects our new desire for clear and open communication as well as for being respectful. Far too many people are fooled by the terms "certified" and "master" and we're going to do our best to reduce this problem through greater clarity.
As I hope you have guessed by now this blog is an April Fool's joke
. I have no intention of becoming the Managing Director of the Scrum Alliance and my condolences go out to anyone who would take on this position. This blog posting does however reflect what I would do to bring greater clarity, integrity, and respect to the Scrum community. The Scrum Alliance can and should choose to do a lot better. I hope it has been food for thought.
For some reason, it seems as if everyone's grandfather at one point in time recommended to use the right tools for the job. That's practical wisdom from my point of view, one that is certainly an issue for agile development.
One of the primary messages, I hope, of the Agile Scaling Model (ASM)
is that context counts. Although the focus of the ASM is on describing a contextual framework for tailoring your process to meet the needs of the situation that you find yourself in, it's also applicable to your tooling selection. For example, the tool choices of a co-located team will be much different than that of a geographically distributed team. A co-located team will likely use a whiteboard
or paper for their agile modeling
efforts, whereas distributed team members may need to capture their diagrams using a more sophisticated tool such as Rational Requirements Composer (RRC)
so that their work can be shared electronically. Having said that, RRC would be overkill for a co-located team (unless they had regulatory compliance issues). Different teams, different situations, therefore different tooling choices.
One of the concerns that I run into from customers is that some of our legacy products don't support agile very well. Once again, it's a matter of context because many of our legacy products reflect the realities faced by more traditional teams. The challenge occurs when you try to take a legacy product which is well suited for traditional development, such as Rational ClearCase
, and try to apply it on agile projects. Although ClearCase makes sense in certain scaling situations, particularly very large teams that are geographically distributed, you'd be better advised to use something like Rational Team Concert (RTC)
for configuration management on most agile teams (note that RTC does far more than just SCM).
So, if you're taking an agile approach you should consider Rational tools such as RTC, RRC, Rational BuildForge
, Rational AppScan
, and others which support agile
development. Granted, some you would only use at scale -- for example Buildforge is a good option in really complex environments, but if you don't face that complexity then you'll likely find that RTC's build engine is sufficient. Similarly, if you're taking a traditional approach to development then you'll likely consider products such as ClearCase, Appscan, RTC, and Rational Software Architect (RSA)
instead. Different situations, different tooling choices.
What's even more confusing is that some products support a range of process paradigms. For example, RTC supports agile, lean, iterative, and traditional approaches to development. The same can be said of Appscan and several other products. Notice how I listed RTC and Appscan for both agile and traditional development above.
So, if anyone tells you that Rational tools don't support agile development don't believe them. Ask them which tools that they're talking about, and ask them if they're aware of the Rational products that do support agile development. Context counts.
I'm happy to announce that IBM Rational's RP252 Advanced Disciplined Agile Delivery (DAD) workshop
is now available. This is a 3-day, hands-on workshop which teaches students the fundamentals of Disciplined Agile Delivery (DAD)
. This workshop is offered both publicly and privately.
I'm happy to announce that a revised version of the Lean Development Governance
white paper which I co-wrote with Per Kroll is now available. This version of the paper reflects our learnings over the past few years helping organizations to improve their governance strategies.
There's a more detailed description of the paper here
There is a distinct rhythm, or cadence, at different levels of the agile process. We call this the agile 3C rhythm, for coordinate, collaborate, and conclude (which is sometimes called stabilize). The agile 3C rhythm occurs at three levels in Disciplined Agile Delivery (DAD):
- Day. A typical day begins with a short coordination meeting, called a Scrum meeting in the Scrum method. After the daily coordination meeting the team collaborates throughout most of the day to perform their work. The day concludes with a working build, hopefully you had several working builds throughout the day, which depending on your situation may require a bit of stabilization work to achieve.
- Iteration. DAD construction iterations begin with an iteration planning session (coordinate) where the team identifies a detailed task list of what needs to be done that iteration. Note that iteration modeling is often part of this effort. Throughout the iteration they collaborate to perform the implementation work. They conclude the iteration by producing a potentially consumable solution, a demo of that solution to key stakeholders, and a retrospective to identify potential improvements in the way that they work.
- Release. The DAD lifecycle calls out three explicit phases - Inception, Construction, and Transition – which map directly to coordinate, collaborate, and conclude respectfully.
The agile 3C rhythm is similar conceptually to Deming’s Plan, Do, Check, Act (PDCA) cycle:
- Coordinate maps to plan
- Collaborate maps to do
- Conclude maps to check and act
There is a fair bit of rhetoric surrounding agile methods, some of which we subscribe to and some of which we don’t. We’d like to briefly examine the rhetoric which we’ve found to be the most misleading for people trying to be effective at adopting agile techniques. The following list is in the format X but Y, where X is the rhetoric and Y is the strategy promoted by the Disciplined Agile Delivery (DAD) process framework. This includes:
- Requirements evolve throughout the lifecycle BUT the scope should still be agreed to at the beginning of the project. There has to be an initial vision for a project, a vision which your stakeholders should help define and then agree to, and to come to that vision you will need to perform some initial requirements envisioning. A list of high level features is part of this initial vision. Yes, the details are very likely to evolve over time but the fundamental goals of your project and scope of your effort needs to be defined early in your project. In a very small minority of situations you may not be able to get the right people together, either physically or virtually, to define the initial vision – this should be seen as a significant project risk.
- Simple designs are best BUT the architecture should be thought out early in the lifecycle. Too many developers interpret the advice to focus on simple designs to mean that they should build everything from scratch. Yet more often than not the simplest design is to take advantage of what is already there, and the best way to do that is to work closely with people who understand your existing technical infrastructure. Investing in a little bit of architectural envisioning early in the lifecycle enables your team to identify existing enterprise assets that you can leverage, to identify your architectural options, and to select what appears to be the best option available to you. The details will still emerge over time, and some decisions will be deferred until a later date when it’s more appropriate to make them, but the bottom line is that disciplined agilists think before they act.
- Teams should be self organizing BUT they are still constrained (and enhanced) by your organizational ecosystem. Intellectual workers, including IT professionals, are most effective when they have a say in what work they do and how they do it. IT professionals can improve their productivity by following common conventions, leveraging and building out a common “dev-ops” infrastructure, building towards a common vision, and by working to common business and technical visions. In short, disciplined agile professionals are "enterprise aware".
- Delivery teams don’t need prescriptive process definitions BUT they do need some high-level guidance to help organize their work. Individual IT professionals are typically highly-skilled and highly-educated people often with years of experience, and teams of such people clearly have a wide range of knowledge. As a result of this knowledge it is incredibly rare for such people to read detailed procedures for how to do their work. However, they often still require some high-level advice to help them to organize their work effectively. Teams can often benefit from techniques and patterns used by other teams and this knowledge sharing should be encouraged.
- IT professionals know what to do BUT they’re still not process experts. A decade ago the strategy was to provide detailed process advice to teams, but recently the pendulum has swung the other way to provide little or no defined process at all. Over the last few years there’s been a trend within the agile community to advise teams to define their own process so that it’s tailored to their own unique situation. While this clearly strokes people’s egos, it’s relatively poor advice for several reasons. First, although every team is in a unique situation there is significant commonality so having at least a high-level process framework from which to start makes sense. Second, although these teams have a wide range of knowledge it might not be complete, nor consistent, nor is it clear what the trade-offs are of combining all the really good techniques that people know about. There is significant benefit in having a flexible process framework such as DAD which shows how everything fits together.
- IT professionals should validate their own work to the best of their ability BUT they likely aren’t testing experts so therefore need help picking up the appropriate skills. The mantra in the agile community is to test often and test early, and better yet to test first. As a result agile teams have adopted a “whole team” approach where the development team does its own testing. This works when there are people on the team with sufficient testing skills and more importantly can transfer those skills to others. Minimally you will need to embed testers into your delivery teams, but you should also consider explicit training and mentoring of everyone on the team in testing and quality skills. You may find my agile testing and quality strategies article to be an interesting read.
- Disciplined agile teams work in an iterative manner BUT still follow a lifecycle which is serial over time. On any given day people on a DAD project team may be performing analysis, testing, design, programming, deployment, or a myriad of other activities and iterating back and forth between them. But, the DAD lifecycle includes three distinct phases which are performed in order. So, DAD is both iterative in the small but serial in the large.
IBM Rational recently published an update to my Agility@Scale e-book
, which can be downloaded free of charge. The e-book is a 21 page, 2.3 meg PDF (sorry about the size, guess the graphics did it) . It overviews the Agile Scaling Model (ASM)
, Disciplined Agile Delivery (DAD), the scaling factors of Agility@Scale, and ends with some advice for becoming as agile as you can be. In short it's a light-weight coverage of some of the things I've been writing about in this blog the past couple of years. Could be a good thing to share with the decision makers in your organization if they're considering adoption agile strategies.
When it comes to testing on agile projects it is common practice for agile teams to adopt a "whole team testing
" approach where the team itself does its own testing. To accomplish this agile teams will often embed testers in the development team. Programmers will work closely with the testers, often via non-solo development
strategies such as pair programming, to pick up their valuable testing skills. The testers will in turn pick up new skills from the programmers, and in effect both groups will move away from being just specialists (testers or programmers) to being what's called generalizing specialists
. Whole team testing can be very different from traditional approaches where programmers may do some testing, often unit testing of their own code, and then throw it over the wall to testers and quality assurance (QA) professionals for verification and validation.
The types of testing that the parallel independent test team performs may include:
Pre-production system integration testing. Does the solution work within your overall organizational ecosystem? Importantly, if this is one of several teams currently developing new solutions, does this team's solution work with what will be in production (including the work in progress of other teams) when they go to release? In mid-to-large organizations the only economical way to do this sort of testing is via an independent, centralized team.
. Although it's possible to do usability testing on the development team, the reality is that usability testing is a specialized skill that few people have (although could pick up via non-solo development). Furthermore, particularly for solutions with many potential users, you may want to invest in a usability testing
lab. This is a centralized resource, or an outsourced resource these days, which is shared across many teams.
. Security testing is also a specialized skill, albeit one well supported with sophisticated security testing tools such as the Rational Appscan
suite which can be included in your continuous integration (CI) strategy. Many organizations will centralize their security testing efforts.
Exploratory testing. The fundamental goal of exploratory testing is to discover where the solution breaks, as opposed to confirmatory testing which focuses on showing that the solution conforms to the requirements (this is the type of testing the development team typically focuses on). Exploratory testing is also a skill, a good one which everyone should strive to pick up, but exploratory testers are often few in number in many organizations. So, to leverage their skills effectively you may want to have some of them on the independent test team while they mentor others while doing so.
Non-functional testing. Non-functional requirements have a tendency to fall through the cracks on some development teams. Knowing this the independent test team will often "test to the risk" and focus on non-functional issues.
And much more. The above points are just exemplars, not an exact list. Please follow some of the links above for greater detail.
I'd like to leave you with several important thoughts:
The developers still do the majority of the testing. Just because there's an independent test team it doesn't imply that they are the ones doing all the testing. In fact, nothing could be further from the truth. They should be doing the minority of the testing effort, albeit the more difficult forms of it.
An independent test team will support multiple dev teams. For example, a test team of 5-6 people could support several development teams totalling 70 to 80 people. I typically look for a 15:1 or 20:1 ratio of developers to independent testers, hopefully even higher than that.
- You need to consider better tooling. Although the development team will still be using common agile testing tools such as the xUnit and FIT frameworks the independent test team (ITT) will need more sophisticated tooling. First, the ITT will need to be able to report defects back to the team easily. When the development team is using a Jazz-based tool such as Rational Team Concert (RTC) then this can easily be done using either RTC (the web interface may be sufficient) or another Jazz-enabled product such as Rational Quality Manager (RQM). Second, the ITT will likely need more sophisticated testing tools, such as Rational Appscan for static and dynamic security testing and Rational Performance Tester (RPT) for performance testing (just two of several software quality management tools you should consider).
Independent testing is economical. Although I listed several tools in my previous point (hey, I do work for a vendor after all) an "unfortunate" implication of my advice (unfortunate for IBM at least) is that you can reduce the number of licenses that you require and still get this critical testing done by centralizing their use.
It may be a bit more complicated in regulatory environments. In a strict regulatory environment the independent test team may need to repeat, or at least validate, the testing efforts of the development team. In regulatory environments my fundamental advice is always this -- Have practical people, including yourself, read and interpret the regulations. If you leave it to the bureaucrats you'll get a bureaucratic solution.
This is an important scaling technique. Parallel independent testing, when done in an agile manner, is an important technique which you should consider when scaling agile strategies to meet the uniques needs of the situation that you find yourself in.
Modified by ScottAmbler
I've recently been working with Mark Lines of UPMentors and we've had some interesting discussions around evolving the Agile Manifesto which I thought I would share here to obtain feedback. Note that this is not any sort of official position of IBM, nothing in my blog is by the way (unless explicitly stated so), nor is it some sort of devious plot to take over the agile world (although if we did have some sort of devious plot, we'd make the exact same claim). What we hope to accomplish is to put some ideas out there in the hopes of getting an interesting conversation going.
Over the past decade we’ve applied the ideas captured in the Agile Manifesto and have learned from our experiences doing so. What we’ve learned has motivated us to suggest changes to the manifesto to reflect the enterprise situations which we have applied agile and lean strategies in. We believe that the changes we’re suggesting are straightforward:
Where the original manifesto focused on software development, a term which too many people have understood to mean only software development, we suggest that it should focus on solution delivery.
Where the original focused on customers, a word that for too many people appears to imply only the end users, we suggest that it focus on the full range of stakeholders instead.
Where the original manifesto focused on development teams, we suggest that the overall IT ecosystem and its improvement be taken into consideration.
Where the original manifesto focused on the understanding of, and observations about, software development at the time there has been some very interesting work done within the lean community since then (and to be fair there was very interesting work done within that community long before the Agile Manifesto was written). We believe that the Agile Manifesto can benefit from lean principles.
Our suggested rewording of the Agile Manifesto follows, with our suggested changes in italics.
Updating the Values of the Agile Manifesto
We are uncovering better ways of developing software by doing it and helping others do it. Through this work we have come to value:
Individuals and interactions over processes and tools
Working solutions over comprehensive documentation
Stakeholder collaboration over contract negotiation
Responding to change over following a plan
That is, while there is value in the items on the right, we value the items on the left more.
Updating the Principles behind the Agile Manifesto
Our highest priority is to satisfy the customer through early and continuous delivery of valuable solutions.
Welcome changing requirements, even late in the solution delivery lifecycle. Agile processes harness change for the stakeholder’s competitive advantage.
Deliver working solutions frequently, from a couple of weeks to a couple of months, with a preference to the shorter timescale.
Stakeholders and developers must work together daily throughout the project.
Build projects around motivated individuals. Give them the environment and support they need, and trust them to get the job done.
The most efficient and effective method of conveying information to and within a delivery team is face-to-face conversation.
Quantified business value is the primary measure of progress.
Agile processes promote sustainable development. The sponsors, developers, and users should be able to maintain a constant pace indefinitely.
Continuous attention to technical excellence and good design enhances agility.
Simplicity--the art of maximizing the amount of work not done--is essential.
The best architectures, requirements, and designs emerge from self-organizing teams.
At regular intervals, the team reflects on how to become more effective, then tunes and adjusts its behavior accordingly.
Leverage and evolve the assets within your organizational ecosystem, and collaborate with the people responsible for those assets to do so.
Visualize workflow to help achieve a smooth flow of delivery while keeping work in progress to a minimum.
The organizational ecosystem must evolve to reflect and enhance the efforts of agile teams, yet be sufficiently flexible to still support non-agile or hybrid teams.
We’re agile – things evolve, including manifestos. Looking forward to your feedback (add a comment).
Updates Since this Was First Published:
February 2011: At the 10th Anniversary of the Agile Manifesto get together several people, including myself, brought up the idea of updating the Agile Manifesto. Unfortunately the decision by the original writers of the manifesto was to adopt a very strict, non-agile change management approach where any changes to the manifesto would need the approval of all 17 of them. So, pretty much zero chance of there ever being any changes (hence the lack of changes so far).
June 2012: This extension to the manifesto was retitled "A Disciplined Agile Manifesto" and published as in the book Disciplined Agile Delivery written by myself and Mark Lines.
November 2012: Mark and I formed Scott Ambler+Associates.
February 2013: The Disciplined Agile Consortium (DAC) is formed. The mission of DAC is to evolve and support the Disciplined Agile Delivery (DAD) framework.
One of the scaling factors
called out in the Agile Scaling Model (ASM)
is domain complexity. The general idea is that agile teams will find themselves in different situations where some teams are developing fairly straightforward solutions, such as an informational website, whereas others are addressing very complex domains, such as building an air-traffic control system (ATCS). Clearly the team building an ATCS will work in a more sophisticated manner than the one building an informational website. I don't know whether agile techniques have been applied in the development of an ATCS, although I have to think that agile's greater focus on quality and working collaboratively with stakeholders would be very attractive to ATCS delivery teams, I do know that agile is being applied in other complex environments: The 2009 Agility at Scale Survey
found that 18% of respondents indicated that their organizations had success at what they perceived to be very complex problem domains,.
Increased domain complexity may affect your strategy in the following ways:
- Reaching initial stakeholder consensus becomes difficult. One of the risk reduction techniques called out in Disciplined Agile Delivery (DAD) is to come to (sufficient) stakeholder consensus at the beginning of the project during the Inception phase (called Sprint 0 in Scrum or Iteration 0 in other agile methods). Stakeholder consensus, or perhaps "near concensus" or "reasonable agreement" are better terms, can be difficult to come to the more complex the problem domain is because the stakeholders may not fully understand the implications of what they're making decisions about and because there is likely a greater range of stakeholders with differing goals and opinions. The implication is that your project initiation efforts may stretch out, increasing the chance that you'll fall back on the old habits of big requirements up front (BRUF) and incur the costs and risks associated with doing so.
- Increased prototyping during inception. It is very common for disciplined agile teams to do some light-weight requirements envisioning during inception to identify the scope of what they're doing and to help come to stakeholder consensus. The greater the complexity of the domain, and particularly the less your team understands about the domain, the more likely it is that you'll benefit from doing some user interface (UI) prototyping to explore the requirements. UI prototyping is an important requirements exploration technique regardless of paradigm, and it is something that you should consider doing during both initial requirements envisioning as well as throughout the lifecycle to explore detailed issues on a just in time (JIT) manner.
- Holding "all-hands reviews". One strategy for getting feedback from a wide range of people is to hold an "all hands review" where you invite a large group of people who aren't working on a regular basis with your team to review your work to date. This should be done occasionally throughout the project to validate that the input that you're getting from your stakeholder represenatives/product owners truly reflects the needs of the stakeholders which they represent. The 2010 How Agile Are You? Survey found that 42% of "agile teams" reported running such reviews.
- Increased requirements exploration. Simple modeling techniques work for simple domains. Complex domains call for more complex strategies for exploring requirements. The implication is that you may want to move to usage scenarios or use cases from the simpler format of user stories to capture critical nuances more effectively. A common misunderstanding about agile is that you have to take a "user story driven approach" to development. This is an effective strategy in many situations, but it isn't a requirement for being agile.
- The use of simulation. You may want to take your prototyping efforts one step further and simulate the solution. This can be done via concrete, functional prototypes, via simulation software, via play acting, or other strategies.
- Addition of agile business analysts to the team. Analysis is so important to agile teams we do it every day. In situations where the domain is complex, or at least portions of the domain is complex, it can make sense to have someone who specializes in exploring the domain so as to increase the chance that your team gets it right. This is what an agile business analyst can do. There are a few caveats. First, even though the domain is complex you should still keep your agile analysis efforts as light, collaborative, and evolutionary as possible. Second, this isn't a reason to organize your team as a collection of specialists and thereby increase overall risk to your project. The agile analyst may be brought on because their specialized skills are required, but the majority of the people on the team should still strive to be generalizing specialists. This is also true of the agile analyst because their may not be eight hours a day of valuable business analysis work on the team, and you don't want the BA filling in their time with needless busy work.
The important thing is to recognize that the strategies which work well when you're dealing with a simple domain will not work well for a complex domain. Conversely, techniques oriented towards exploring complex domains will often be overkill for simple domains. Process and tooling flexiblity is key to your success.
- Does the team regularly produce value for their stakeholders?
- Does the team validate its own work to the best of its ability?
- Are stakeholders actively involved?
- Is the team self organizing?
- Does the team strive to improve their process?
Some interesting results include:
94% of teams which are claiming to be agile are providing value to stakeholders on a regular basis.
87% of teams which are claiming to be agile are validating their own work.
95% of teams which are claiming to be agile are working closely with stakeholders.
56% of teams which are claiming to be agile are self organizing.
88% of teams which are claiming to be agile are improving the process that they follow throughout the lifecycle.
Teams which are claiming to be agile often aren't. 53% of "agile teams" meet the five criteria, although 72% meet all but the self-organization criteria.
Teams which are moving towards agile but aren't there yet are reasonably close. 39% of those teams meet all five criteria and 63% meet all but self-organization.
I believe that there are several important implications:
- Whenever someone claims to be on an agile team you may want to explore that claim a bit deeper.
The low level of self organization may be an indicator of cultural challenges with organizations in that their project managers aren't giving up sufficient control. The Agility at Scale survey
in November 2009 found that 59% of respondents who indicated that their organization hadn't adopted agile techniques yet that a rigid culture was hampering their efforts. The IT Governance and Project Management
survey in July 2009 discovered that "questionable behaviors", many of which were ethically questionable (I'm being polite), were far too common within IT project management.
Although "agile teams" may not be as agile as they claim, they're still doing better than traditional V-model teams, as revealed (again) by the 2010 IT Project Success
If there was some sort of consensus within the agile community as to the criteria for determining whether a team is agile, I highly suspect that the agileness ratings would increase over time. What gets measured often improves.
However, how agile you are isn't anywhere near as important as getting better at what you're doing. So perhaps I'm barking up the wrong tree on this issue. ;-)
In previous blog postings I've defined Discipline Agile Delivery (DAD)
but I haven't shared the lifecycle (although I have done so in a couple of white papers, most recently Scaling Agile: An Executive Guide
) in this blog. Until now.
The DAD method combines strategies and practices from several software methods, including Scrum
, Extreme Programming (XP)
, Agile Modeling
, Agile Data
, and the Open Unified Process (OpenUP)
. One aspect of this "process idea reuse" is that the DAD extends the Scrum lifecycle to be a full-fledged delivery lifecycle. Figure 1 overviews the Scrum lifecycle, which addresses the construction aspects of agile delivery quite well. It depicts the product backlog which is a basic prioritized requirements stack
; the concept of delivering incrementally in consistent time boxes (what Scrum calls sprints and other methods such as DAD call iterations); holding a daily coordination meeting; and demoing your work at the end of the sprint/iteration/timebox to get feedback from key stakeholders. These are all great ideas, which is why the DAD method adopts and enhances them.Figure 1: The Scrum lifecycle. The focus is on the construction part of the lifecycle (click on the diagram for details).
Several years ago I wrote about the Agile lifecycle
and the need to extend it beyond construction, and this thinking is reflected in the DAD lifecycle of Figure 2. The DAD lifecycle extends the Scrum lifecycle in several important ways:
- It includes explicit phases. Sacrilege! Rhetoric aside, there are in fact serial aspects to agile software development. Project teams go through an initiation effort - called "warm up" in Eclipse Way, Inception in Unified Process, Sprint 0 in Scrum, and Iteration 0 in other methods - at the beginning of a project. Eventually the team will go through a release phase - called the "end game" in Eclipse Way
- It includes project initiation. During the Inception phase you perform basic project initiation activities such as requirements envisioning, architecture envisioning, initial release planning, getting funding for the project, and starting to build the team (among other tasks). In the summer of 2009 I ran the 2009 Agile Project Initiation survey which revealed that the average agile team spent 4 week on initiation activities such as this, that 89% did some sort of up-front requirements work, and that 85% did some sort of up-front architecture work.
- It includes release activities. The DAD lifecycle also includes a Transition phase where you release your solution into production or the marketplace. These activities typically include final testing and hardening of your solution, training end users, pilot/beta testing, finalizing documentation, running the solution in parallel with the system(s) being replaced, and so on.
- It explicitly indicates production activities. Many agile delivery teams are responsible for supporting the existing version(s) of their system which are currently running in production. Because there are existing versions, the team will be getting enhancement requests and defect reports from their operations and support people. Many of these requests can simply be treated as new requirements to be prioritized and put on the work item stack. Some need to be addressed right away, particularly "severity 1" defects, which requires the delivery team to "stop the line", address the problem, release a patch or hot fix, then reintegrate the changes into the version they're currently working on. My experience is that it's critical to include a production phase in your delivery lifecycle to make it explicit to the team that they need to take operations and support concerns into account.
- It explicitly enhances the product backlog. The product backlog has evolved into a work item list (or work item stack if you prefer). Disciplined agile teams put more than just requirements on the stack, as you read above it is common to treat defect reports as you do requirements.
- It explicitly includes critical milestone points. An important aspect of the DAD method is that not only does it support self organization such as Scrum but it does so within an appropriate governance framework. Disciplined agile teams recognize that they exist within a larger organization, that they should follow common development guidelines, that they should strive to leverage and build out the shared enterprise infrastructure, that they must report common metrics to senior management (hopefully automatically via the use of instrumented tooling such as we see on the Jazz platform).
One of the advantages of the DAD method over Scrum is that it doesn't require you to figure these common things out for yourself. Figure 2. The Disciplined Agile Delivery (DAD) lifecycle (basic). The focus is on the delivery portion of the system lifecycle, from starting a project to releasing the solution into production (click on the diagram for details).
Figure 3 depicts the advanced form of the DAD lifecycle. This form of the lifecycle occurs on experienced teams that have originally adopted the basic, Scrum-based lifecycle of Figure 2 and evolved it over time to be leaner. One of the implications of continuous improvement and continuous learning, key recommendations of the DAD process framework, is that your lifecycle will evolve. Primary changes that you see between Figure 2 and Figure 3 are the adoption of a work item pool
instead of a work item stack
and the abandonment of iterations (the critical observation is that practices such as detailed planning, demos, retrospectives and so on do not need to be on the same cadence, hence iterations disappear).
Figure 3. The Disciplined Agile Delivery (DAD) lifecycle (advanced). Over time you will improve your strategy towards a leaner approach (click on the diagram for details).
Figure 4. An older version of the basic DAD lifecycle using Scrum terminology. Use whatever terminology you're comfortable with, there is no "standard" (click on the diagram for details).
One of the differences that you may have noticed between the Scrum lifecycle of Figure 1 and the DAD lifecycle of Figure 2 is different terminology is used. For example, iteration is used instead of sprint. Work item list is used instead of product backlog. Although I believe that the terminology used in Figure 2 is more accurate, it really doesn't matter because it's easy to use Scrum terminology with DAD if you like. You can see this clearly in Figure 4. What is important is that you choose the terminology which you are most comfortable with, and be prepared to translate back and forth between terms as there are no standards and there never will be. As an aside, you might find Translating Scrum Terminology
to be of interest.
DAD is still a process framework that you'll need to tailor to meet your unique needs. More on this in future blog postings.