ServiceTechMag.com > Issue XXXIX: May 2010

Issue XXXIX, May 2010

Leveraging the Next Generation SOA Ideals
for Service Oriented Enterprises (SOEs)

Pethuru Cheliah

Pethuru Cheliah

The mantra of every customer-facing business in this planet is to do more with less. This notion has drawn considerable attention these days due to the pervasive economic slump. Worldwide enterprises down with sluggish economy are hence keenly looking out for trend-setting inventions, innovations and non-linear methods in order to be competitively ahead in their service and solution offerings. Executives are seeking out novel and nimbler business, pricing and delivery models. Technical managers and architects are on their toes in order to unearth unconventional development approaches for faster software realization, integration, and modernization. Professionals and pundits are coming out with cutting-edge technologies, simplifying patterns, enabling architectures, and facilitating frameworks...

Understanding Service Composition
Part II: Dealing With Identity

John deVadoss

John deVadoss

Services often enforce a trust boundary. A service typically does not trust another external service and will do its own due diligence with respect to granting access and execution privileges to service requests. Incoming messages will be inspected; fields will be validated; identity will be authenticated, and entitlements will be validated prior to allowing incoming service requests to be processed. There is typically a workflow of tasks that is prescribed prior to fulfilling external service requests, comprised of authentication (validating the identity of the incoming service request), authorization (validating the right to access resources and business functions), and auditing (recording and tracking who did what and when). In this context, dealing with trust and identity across multiple services is essential and commonly a pre-requisite to enabling service composition in the real world...

Effective Top-Down SOA Management
In An Efficient Bottom-Up Agile World - Part II

Philip Wik

Philip Wik

System building is a search for truth, and SOAG is no exception. We must establish SOAG on a foundation of sound epistemology. SOAG must be above all a rational process, a process that binds us to principles of empirical adequacy and rational coherency without respect to what I believe or to what the team believes. Empirical adequacy requires that the concept under question be amendable to empirical verification and asks the question: does it meet the evidence? Rational coherency requires that the concept should be consistent with other concepts that were arrived at rationally. It asks the question: is it consistent within itself? SOAG asks us to think for ourselves. But, in contrast to Agile, SOAG makes the radical claim that we should not think for ourselves. "It is a profoundly erroneous truism, repeated by all copybooks and by eminent people when they are making speeches, that we should...

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