In almost all SOA initiatives, the most important initial steps have nothing to do with choosing or deploying software.
First and foremost, modeling an effective transformation demands a comprehensive understanding of existing business assets, processes, and the technical landscape already in place within your enterprise -- and frequently beyond its walls.
That may seem obvious, yet some companies lack an appreciation for the scope of true SOA adoption. Often, organizations familiar with benefits gleaned through early Web services point solutions anticipate quick returns that discount proper planning and allow projects to be commandeered by IT too early in the process.