Agility@Scale: Strategies for Scaling Agile Software Development

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:

1. 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.
2. 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.
3. 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".
4. 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.
5. 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.
6. 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.
7. 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.

1. 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.
2. 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.
3. Release. The DAD lifecycle calls out three explicit phases - Inception, Construction, and Transition – which map directly to coordinate, collaborate, and conclude respectfully.

• Coordinate maps to plan
• Collaborate maps to do
• Conclude maps to check and act

• 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.

• 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?

1. Initial requirements envisioning.  Disciplined agile teams invest time at the beginning of the project to identify the high-level scope in a light-weight, collaborative manner.  This includes common operations requirements such as the need to backup and restore data sources, to instrument the solution so that it can be monitored in real time by operations staff, or to architect the solution in a modular manner to enable easier deployment. 
2. Initial architecture envisioning. Disciplined agile teams will also identify a viable architectural strategy which reflects the requirements of their stakeholders and your organization’s overall architectural strategy (hence the need to work closely with your enterprise architects and operations staff).  One goal is to ensure that the team is building (or buying) a solution which will work well with the existing operational infrastructure and to begin negotiating any infrastructural changes (such as deploying new technologies) early in the project.   Another goal is to ensure that operations-oriented requirements are addressed by the architecture from the very start. 
3. Initial release planning.  As part of release planning the disciplined agile team works closely with their operations group to identify potential release windows to aim for, any release blackout periods to avoid, and the need for operations-oriented milestone reviews later in the lifecycle (if appropriate).
4. Active stakeholder participation.  Disciplined agile teams work closely with their stakeholders, including both operations and support staff, all the way through the lifecycle to ensure that their evolving needs are understood.   
5. Continuous integration (CI).  This is a common technical agile practice where the solution is built/compiled, regression tested, and maybe even run through code analysis tools.  CI promotes greater quality which in turn enables easier releases into production.  
6. Parallel independent testing. For enterprise-class development or at scale, particularly when the domain or technology is very complex or in regulatory environments, disciplined agile team will find they need to support their whole team testing efforts with an independent test team running in parallel to the development team.  These testing issues often include validation of non-functional requirements – such as security, performance, and availability concerns – and around production system integration.  All of these issues are of clear importance for operations departments.   
7. Continuous deployment.  With this practice you automate the promotion of your working solution between environments.  By automating as much of the deployment effort as possible, and by running it often, the development team increases the chance of a successful deployment and thereby reduces the risk to the operations environment. Note that deployment into production is generally not automatic, as this is an important decision to be made by your operations/release manager(s). 
8. Continuous documentation.  With this practice supporting documentation, including operations and support documentation, is evolved throughout the lifecycle in concert with the development of new functionality. 
9. Production release planning.  This is the subset of your release planning efforts which focuses on the activities required to deploy into production. 
10. Production readiness reviews.  There should be at least one review, performed by the person(s) responsible for your operations environment, before the solution is deployed into production.  The more critical the system, the more product readiness reviews may be required. 
11. End-of-lifecycle testing.  Minimally you will need to run your full automated regression test suite against your baselined code once construction ends.  There may also be manual acceptance reviews or testing to be performed, and any appropriate fixing and retesting required to ensure that the solution is truly ready for production. 

1. You adopt "standard" agile discipline.   Aspects of agile which require discipline include adopting practices such as test-driven development (TDD), active stakeholder participation, working collaboratively, shortening the feedback cycle, and many more.  These strategies are a great start to becoming disciplined IT professionals. 
2. You take a goal-driven approach.  When we first started working on the DAD framework I didn't want to create yet another prescriptive framework, particularly given Rational's track record with the Rational Unified Process (RUP) framework.  Rational has been pilloried for years for the prescriptive nature of RUP, which is unfortunate because there are a lot of great ideas in RUP that agile teams can benefit from, some of which we adopted in DAD and many of which are being actively reinvented with the agile community even as you read this. Furthermore, there are many prescriptive elements of the Scrum method that can get teams in trouble.  For example, Scrum prescribes that you hold a daily stand up meeting, often called a Scrum meeting, where everyone should answer three questions.  That's a great approach for teams new to agile, but it proves problematic in many situations due to it's prescriptive nature. Do you really need to do this once a day?  I've been on teams where we held coordination meetings twice a day and others only once a week.  Do you really need to stand up?  I've been on geographically distrubited agile teams where many of us were sitting down during coordination calls.  Do you really need to answer three questions, two of which are clearly focused on status regardless of claims otherwise?  I've been on lean teams where we met around our Kanban board and focused on potential blockers.  The answers to these questions depends on the context of the situation you find yourself in.  The challenge, at least from the point of view of a process framework, is how do you avoid falling into the trap of being overly prescriptive.  The strategy we adopted in DAD is to take a goal-driven approach.  The observation is that regardless of the situation you find yourself in there are common goals your team will need to fulfill.  For example, at the beginning of a project common goals include developing an initial plan, initially exploring the scope, initially identifying a technical strategy, and securing initial funding (amongst others).  Throughout construction you should coordinate your activities, improve the quality of your ecosystem, and produce a potentially consumable solution on a regular basis (more on this below).  So, instead of prescribing a daily stand up meeting the DAD framework instead indicates you should coordinate your activities, and gives several options for doing so (one of which is a Scrum meeting).  More importantly DAD describes the advantages and disadvantages of your options so that you can make the choice that's best suited for the situation your team finds itself in (see this blog posting for a detailed example of the types of tables included in the DAD book to help you through such process tailoring decisions).  In short, our experience is that it requires discipline to take a goal driven approach to agile delivery over the prescriptive strategies in other agile processes. 
3. You take a context-driven approach.  There are many tailoring factors, which I describe in the Software Development Context Framework (SDCF), which you need to consider when making process, tooling, and team structure decisions.  For example, a large team will adopt a different collection of practices and tools than a small team.  A geographically distributed team will adopt a different strategy than a team that is co-located.  You get the idea.  Other tailoring factors include compliance, team culture, organization culture, technical complexity, domain complexity, and project type.  It requires discipline to recognize the context of the situation you find yourself in and then act accordingly.
4. You deliver potentially consumable solutions.  One of the observations that we made early in the development of the DAD framework was that disciplined agile teams produce potentially consumable solutions, not just potentially shippable software.  Although delivery of high-quality, working software is important it is even more important that we deliver high-quality working solutions to our stakeholders. For example, not only are we writing software but we may also be updating the hardware on which it runs, writing supporting documentation, evolving the business processes around the usage of the system, and even evolving the organizational structure of the people working with the system.  In other words, disciplined agilists focus on solutions over software.  Furthermore, "potentially shippable" isn't sufficient: not only should it be shippable but it should also be usable and should be something people want to use.  In other words it should be consumable (a concept DAD adopted from IBM's Outside In Development).  Minimally IT professionals should have the skills and desire to produce good software, but what they really need are the skills and desire to provide good solutions. We need strong technical skills, but we also need strong "soft skills" such as user interface design and process design to name just two. The incremental delivery of potentially consumable solutions on an incremental basis requires discipline to do successfully.  DAD teams focus on repeatable results not repeatable processes.
5. You are enterprise aware.   Whether you like it or not, as you adopt agile you will constrained by the organizational ecosystem, and you will need to act accordingly. It takes discipline to work with enterprise professionals such as enterprise architects, data admistrators, portfolio managers, or IT governance people who may not be completely agile yet, and have the patience to help them. It takes discipline to work with your operations and support staff in a DevOps manner throughout the lifecycle, particularly when they may not be motivated to do so.  It requires discipline to accept and potentially enhance existing corporate development conventions (programming guidelines, data guidelines, UI guidelines, ...).  It requires discipline to accept that your organization has an existing technology roadmap that you should be leveraging, building out, and in some cases improving as you go.  In short, enterprise awareness requires a level of discipline not typically seen on many agile teams.
6. You adopt a full delivery lifecycle.  Empirically it is very easy to observe that at the beginning of an agile project there are some activities that you need to perform to initiate the project.  Similarly at the end of the project there are activities that you need to perform to release the solution into production or the marketplace.  The DAD process framework addresses the effort required for the full delivery effort, including project initiation, construction, and deployment.  Our experience is that it requires discipline on the part of IT professionals to include explicit phases for Inception/Initation, Construction, and Transition/Deployment and more importantly to focus the appropriate amount of effort on each.  One danger of explicit phases is that you run the risk of taking what's known as a Water-Scrum-Fall approach, a term coined by Dave West the person who wrote the forward for the DAD book, where you take an overly heavy/traditional approach to inception and transition in combination with a lighter agile approach to construction.  Water-Scrum-Fall occurs because many organizations haven't made a full transition to agile, often because they think it's only applicable to construction.  Our experience is that you can be very agile in your approach to inception and transition, experience we've built into the DAD framework.  Having said that it clearly requires discipline to keep inception activities short and similarly it requires discipline to reduce the "transition phase" to an activity. 
7. You adopt a wider range of roles.  An interesting side effect of adopting a full delivery lifecycle is that you also need to adopt a more robust set of roles.  For example, the Scrum method suggests three roles - Scrum Master, Product Owner, and Team Member - a reflection of the Scrum lifecycle's construction focus.  DAD suggests three primary roles - Team Lead, Product Owner, Team Member, Architecture Owner, and Stakeholder - as well as five secondary roles which may appear at scale.   
8. You embrace agile governance.  Governance establishes chains of responsibil­ity, authority and communication in support of the overall enterprise’s goals and strategy. It also establishes measurements, policies, standards and control mechanisms to enable people to carry out their roles and responsibilities effectively. You do this by balancing risk versus return on investment (ROI), setting in place effective processes and practices, defining the direction and goals for the department, and defining the roles that people play with and within the department.  It requires discipline to adopt an agile approach to governance, and that's something built right into the DAD framework.

1. Disciplined Agile Yellow Belt. This beginner certification indicates to colleagues and employers that you are eager to learn Disciplined Agile Delivery (DAD) strategies that enable you to increase your skills and abilities as a software professional.
2. Disciplined Agile Green Belt. This intermediate certification indicates that you are experienced at DAD and are on your way to becoming a generalizing specialist. You have the potential to be a “junior coach” under the guidance of a senior coach (someone who is likely a Disciplined Agile Black Belt).
3. Disciplined Agile Black Belt. This expert certification indicates that you are a trusted expert with significant proficiency at DAD. You can coach other people in disciplined agile strategies and advise organizations in the adoption and tailoring of the DAD framework.

Differentiate yourself in the marketplace. Certification in Disciplined Agile Delivery (DAD) means something to clients and employers because it needs to be earned. Certification in DAD tells the marketplace you understand how to deliver an agile solution from end-to-end with experience in enterprise-class development.

On April 25, 2013 I gave a webcast for the Global Rational User Community entitled Disciplined Agile Delivery: Going beyond Scrum .  During the webcast a large number of questions were asked but unfortunately I couldn’t get to all of them.  So I’ve taken the opportunity to write up the answers in this blog posting.

1. Fequently asked questions. Many of the questions are addressed in the DAD FAQ.
2. DAD elevator pitch - I will be starting work in a couple of weeks for a company that has just started its Agile journey this year by implementing Scrum. What would Scott put in an elevator chat as to why they should be moving towards DAD.  The Disciplined Agile Delivery (DAD) decision process framework is a people-first, learning-oriented hybrid agile approach to IT solution delivery. It has a risk-value delivery lifecycle, is goal-driven, is enterprise aware, and is scalable.  There are clearly some interesting aspects to the DAD framework. DAD is a hybrid approach which extends Scrum with proven strategies from Agile Modeling (AM), Extreme Programming (XP), Unified Process (UP), Kanban, Lean Software Development, Outside In Development (OID) and several other methods. DAD is a non-proprietary, freely available framework. DAD extends the construction-focused lifecycle of Scrum to address the full, end-to-end delivery lifecycle from project initiation all the way to delivering the solution to its end users. It also supports lean and continuous delivery versions of the lifecycle: unlike other agile methods, DAD doesn’t prescribe a single lifecycle because it recognizes that one process size does not fit all. DAD includes advice about the technical practices such as those from Extreme Programming (XP) as well as the modeling, documentation, and governance strategies missing from both Scrum and XP. But, instead of the prescriptive approach seen in other agile methods, including Scrum, the DAD framework takes a goals-driven approach. In doing so DAD provides contextual advice regarding viable alternatives and their trade-offs, enabling you to tailor DAD to effectively address the situation in which you find yourself. By describing what works, what doesn’t work, and more importantly why, DAD helps you to increase your chance of adopting strategies that will work for you.  The article Introduction to Disciplined Agile Delivery provides a more detailed description.
3. The book: Could you please repeat the name of the book that Scott is talking about?  The book is Disciplined Agile Delivery: A Practitioner’s Guide to Agile Software Delivery in the Enterprise published by IBM Press, June 2012.  The Disciplined Agile Delivery (DAD) website  and the Disciplined Agile Consortium website are also good DAD resources.
4. The Surveys: Where is the data published about geographic distribution and effectiveness?  All of my survey data, the original questions as asked, and my analysis can be downloaded free of charge from my IT Surveys page.  If you ever see a request from me to fill out a survey, please take a few minutes and do so.  I think you'll agree that my surveys page is in fact a very useful resource, so please contribute when you can.
5. Project success criteria: Where would a goal of defining success criteria fall?  In the DAD book we describe how the success criteria for the project should be initially identified during Inception. Success criteria, like other things, could evolve throughout the project.  You might find the IT Process Success Surveys to be of interest as several of them explored what success criteria projects actually have.  Interestingly, its rarely “on time, on budget, to specification”.
6. Transitioning to DAD: How would you typically phase a DAD implementation, let's say in a project pilot where they haven't been exposed yet to Agile?  Same question, any variance if the development team has already started Scrum?  This is a fairly complex question to answer.  The short story is that you need to invest some time to understand what your strengths and weaknesses are so that you can identify what you need to focus on.  You will then likely need to pilot strategies/techniques which are new to your organization before rolling them out widely.  You may also need to invest in training and coaching/mentoring depending on your needs.  My company, Scott Ambler + Associates, offers these sorts of services and more for organizations interesting in adopting disciplined agile strategies. 
7. Skills: I am aware that ideally developer should also be able to test but in reality theses are usually separate roles. Is it in line with your beliefs\suggestions?  Many organizations that are new to agile still have roles that reflect their existing strategy.  Non-agile approaches often have people in specific roles such as programmer, tester, designer, and so on. In DAD we promote a different set of agile roles that reflect agile thinking.  The implication is that you’re going to have to help individuals transition over to the new way of thinking, something we cover in Chapter 4 of the DAD book.  You might also find Mark Lines' blog, No role in DAD for an Analyst?  to provide some insights into issues surrounding the transition from traditional to agile roles.
8. Teaming: What happens with the Product Owner and the Architecture Owner don’t Agree?  See my blog What Happens When People Don’t Agree 
9. Skillsets: Different people of the team have different skills, experience, and time horizons.  We can't all be generalists, can we?  There are several agile roles in DAD, each of which have different rights, responsibilities, and skillsets.  So we’re not promoting the idea that everyone have the same skillset.  However, we do promote the philosophy that people should strive to be T-skilled generalizing specialists so as to improve their productivity.
10. Teaming: What are your thoughts on team cohesion?  Teams will gel over time.  Being co-located helps.  Having people who are dedicated 100% to the team helps.  Building a team of people who want to be there helps.  Self organization helps. 
11. Tool support: Is there an RMC plug-in for DAD + Is there any software behind DAD... or some software that supports it... such as Jazz (RTC) for Agile/Scrum?  Yes, IBM Rational does in fact have an RMC plug in for DAD.  There is also a template for Microsoft TFS from RDA Corp, Software Development Expert’s Practices Advisor supports DAD comprehensively, and I’m currently working with MethodPark to do so too.    Stay tuned to the Disciplined Agile Delivery website for information about tool support.
12. Governance: Regarding enterprise governance and enterprise IT, how do you start taking a culture that imposes common-process, common-tools, central (often outsourced) IT services, and heavyweight stage/gate across all organizations, and get that evolving toward a (still enterprise aware) lean/agile approach?  This is a hard one.  I’m often called into organizations to help with this very issue.  The challenge is that you need to have a deep understanding of IT governance techniques as well as how to govern agile teams.  Governance is something we discussed in detail in the DAD book as well as on the DAD site, see Adopting Agile Governance Requires Discipline. 
13. Executable specifications: TDD was mentioned, can you comment on Behavior Driven Development (BDD) and any impact on this lifecycle?  BDD is a slight nuance to acceptance test-driven development (ATDD).  BDD/ATDD and TDD are both potential practices that you might choose to follow on a DAD team.  I’ve written a fair bit about agile testing and quality strategies and about TDD in detail.
14. Architecture: When does the first version of architecture gets established and what would require to establish it? You typically start thinking about architecture early in a DAD project during Inception following a practice called architecture envisioning.  I’ve also written a fair bit about agile architecture techniques and the potential misconceptions about agile architecture that you may find interesting.
15. Travel plans: Will you be coming to South Africa at some point?  The good news is that Mark Lines, my co-author, will be in South Africa the week of May 20 in Joburg and the following week in Capetown.  Contact us for details.  I hope to be visiting SA later this year but exact dates haven’t been set yet.  So, please stay tuned on Twitter at @scottwambler for further announcements. 
16. Other travel plans: If you'd like me to speak at a local event, including corporate conferences or training events, please contact me.