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 2006-2009, SOA Systems Inc. http://www.soamag.com/I34/1109-2.php A critical asset that SOA brings to users is the ability to integrate with business partners effectively. It enables a loosely coupled way of linking applications within organizations, across enterprises, and across the Internet. However, the loose coupling of services and their operations across trust boundaries creates challenges in service security. This article discusses how identity services can help service security by exploring practical application options that relate to current industry-standard security technologies, such as WS-Security, WS-Trust and WS SM. We further investigate identity propagation within service-oriented architectures, including those based on enterprise service bus platforms... SOA http://www.soamag.com/I34/1109-2.php#When:03.12.09