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 2006-2011, SOA Systems Inc. http://www.soamag.com/I50/0511-2.php World-renowned SOA expert Thomas Erl had stated the following on Service Reusability, "A service capability can be reused in two different ways. It can be repeatedly invoked by the same service consumer program automating the same business task or it can be invoked by different service consumers automating different business tasks." Based on this thought, services are generally classified into Shared Services and Internal Services. SOA http://www.soamag.com/contributors/bio-pJayakumar.php#When:05.18.11