http://www.soamag.com The SOA Magazine is a monthly online publication provided by SOA Systems Inc. and Prentice Hall/PearsonPTR and is officially associated with the "Prentice Hall Service-Oriented Computing Series from Thomas Erl." SOA en-us Copyright 2006-2008, SOA Systems Inc. http://www.soamag.com/I16/0308-3.asp In the realm of an enterprise contemplating a services-based engineering approach to developing solutions for the business the one factor to note is that most, if not all, business software solutions are evolutionary in nature. This means that they leverage existing software investments and enhance them to deliver increased business value. It is at this point that the services approach encounters perhaps its greatest obstacles because we, as service architects, are then forced to think in terms of the trade-offs of carrying out a foreign SOA methodology. This article provides a practitioner's perspective on these issues with an emphasis on refactoring. (First published in The SOA Magazine Issue XVI, March 2008.) SOA http://www.soamag.com/contributors/bio-cjois.asp#When:13.03.08