Here is a collection of Audio Files for free download. Podcast by Indutry experts on SOA Design and SOA Concepts. Listen to the Experts and Authors on the Subject. Hope you find it useful.

http://soaconcepts.com/?q=node/55

By Dave Chappell

Myth #1. ESB is just a new name for EAI.
While many IT architecture groups are focusing on building SOAs, they still inevitably beg the question of "how is ESB different from EAI?" An ESB is an infrastructure for building an enterprise SOA, and is capable of being used in a more general way than a conventional EAI broker. According to Forrester Research, an ESB helps enterprises obtain the value of SOA by increasing connectivity, adding flexibility that speeds change, and providing greater control over use of the important resources that it binds.

Web-oriented architectures are easier to implement and offer a similar flexibility to SOA.

By Roger Smith

CIOs and system architects find themselves stymied as they try to sledgehammer complex SOAs into their enterprises. Top-down, "if you build it, they will come" approaches to service-oriented architecture often wind up failing--sometimes spectacularly. Instead of better aligning business processes and IT departments, as was promised, too many employees remain oblivious to expensive SOA initiatives. And those optimistic ROI projections? Forget 'em.

SOA Repository Best Practice
By: John Moe, Head of Business Integration, TORI Global
Tuesday, December 8, 2009

For those of us who have been developing applications for many years (think COBOL & Assembler from the 70s and 80s), the idea of having a code library (programs and routines) is nothing new. However for the Web Services generation, this concept has taken a while to re-emerge, but has now been packaged in the form of a services registry and/or repository.