Is SOA ready to move from the whiteboards and into production IT? As you might have guessed, the answer remains a disappointing sort of. The issue comes down to tools and infrastructure, and the fact that only some SOA components are mature and easy to source. The application server market is largely commoditized and the world is awash with IDEs that automatically generate and deploy SOA components from new or legacy code. Given these two pieces, you can begin deploying services tomorrow.
This is fine until you need to scale, then the missing pieces in the puzzle will become apparent. Security, in particular, remains such an elusive piece. Secure SOA demands that there be a binding between identity and transactions. Thus, identity follows each transaction on its flow through a SOA network. This identity can be validated and authorized anywhere work is required, but it is here where the abstract boxes on the whiteboard face an awkward mapping onto real products.
