I have found this common question among attendees from the recently concluded MindTree(http://www.mindtree.com) Osmosis tech fest and last year’s Opengroup’s EA conference where Kamran (MindTree CTO) presented case studies on SOA implementation: I know the “why? of SOA but not sure of the “how?. Is there a methodology? I feel the answer lies in defining an approach(es) to SOA adoption that can cater to large and mid sized opportunities. I have discussed this more at : http://regumindtrail.wordpress.com/2007/01/31/methodology-for-soa-adoption/