I have been a strong advocate of the notion of service eco-systems and have been sharing patterns that help accomplish this task through the design of SOA and SOI that is conductive to the creation and maintenance of a stable service eco-system.
Others have been talking aout various aspects of a service eco-system as well. For example, The role of contracts in the service ecosystem . Some talk about the Web Services Eco-system and how we need tools for consumpiton, test, creation and management.
Recently, George Galambos of IBM delivered a keynote on the Service Eco-system at the IEEE Int'l Conference on Web Services 2005.
Aside from wildlife foundations, Economists also have found interest in ecosystems. For example, they discuss the valuation of an ecosystem .
We'll be hearing much more about this important concept as technologies and organizations mature in their usage and adoption of SOA.
BPM, APIs & Service-oriented Architecture: Insights and Best Practices
From archive: July 2005 X
Ali_Arsanjani 120000D8QB 1,346 Views
Ali_Arsanjani 120000D8QB 1,229 Views
I have recently published an article here on dW regarding SOA and SOI patterns. Others have written in this space, most notably, Rachel Reinitz and Kyle Brown, and Bobby Wolf, three of my colleagues.
I focus on the ways in which we have done SOA with clients and discuss things that we see recurring, that seem to work well.
The Service Eco-system needs standards-based externalization of function, policy, context and events
Ali_Arsanjani 120000D8QB 2,321 Views
Well, over this weekend, deep in space, NASA has succeeded with Deep Impact and another impactor in the form of tennis balls were colliding: Federer has won his third Wimbledon in magnificent straight sets. As Roddick, his opponent, said,(paraphrase) "he is getting better than ever which is a surprise. I have been training hard and he is still getting better. maybe next time I'll punch him...."
The NASA mission showed our increasing precision through technology manipulated through software and (hardware)machines (many times context-aware services and components, but that is another story...) and the tennis champs showed they can progress with even greater precision on the human side.
Our precision in SOA and our success in winning with SOA depends not only on the initial standards and enabling technology, but on extending it to the enterprise scale and beyond into the ecosystem of partners.
To do this, we must focus on externalization of policy, of context and of sense and respond to events; whether the impact of a man-made satellite the size of a coffee table at 23,000 mph onto a raging bull of a comet, or Federer serving and acing at a precise 125 mph. These events, if signifcant to their corresponding businesses must be sensed and responded to. The response cannot be blind: a set of rules must be selected based on the context in which the event occurred and policies need to consulted in order to determine the valid/optimal course of action suitable for the business.
SOA seeks to externalize the interfaces to functionality, so a service consumer can find or use the URL/I and bind to the function without having to worry about the details of the underlying implementation; its design or technology. The service provider needs to also externalize policy information. Both provider and consumer need to monitor services and this is typically done via events. Events can serve as a service invocation mechanisms to wake up a service in a sense and respond scenario. And as the services are merrily firing on their own in blissful automation, the monitoring layering of an SOA should check for certian types of events that it is listening for based on business priority and policy.[Read More]