The April 2011 IDC Opinion, article by Stephen D. Hendrick, has an excellent discussion regarding sustainable architecture and expanding the relevance of SOA in business and IT. He writes:
"The term SOA invokes different responses depending upon whom you talk to. Some members of the analyst community feel that SOA is in need of a “makeover.” C-level business managers sometimes grow nervous because of the “A” word in the term SOA. Developers are generally supportive of what SOA represents, and vendors would like to see a higher level of adoption and leverage of SOA products.
Whats missing from these stereotypes is a perspective on what is really happening in the industry. The reality is that IT is in the midst of a very significant transition from software to services. This transition is occurring because of architectural, technological, and business model changes that are designed to expand and enhance the role of IT within the enterprise. This transition from software to services is the next step in the evolution of SOA and provides confirmation that the principles behind SOA are sound and remain relevant in light of the changes that are occurring in IT. "
The author goes on to say,
"As outlined in this white paper, the opportunities clearly outnumber the challenges that SOA faces. A tactical emphasis on data and application integration is often what brings organizations to SOA but the real value of SOA is realized as organizations standardize their approach to application development and adopt modern application development techniques that share a service and business process focus and never lose sight of the architectural discipline that SOA brings to IT activities."