A talk I gave on Jan 14, 2009 at Library and Archives Canada for the Open Library Environment project Canadian regional workshop. It's a novice and quick introduction to SOA, our practices at CISTI, tips/hints and a few examples just to get our feet wet.
"With support from The Andrew W. Mellon Foundation, a multinational group of libraries is developing the design for an Open Library Environment (OLE),
an alternative to the current model of an Integrated Library System.
The goal is to produce a design document to inform open source library
system development efforts, to guide future library system
implementations, and to influence current Integrated Library System
vendor products." -- http://oleproject.org
The project is based on a firm SOA footing - and has large multinational support.
The workshop is aimed primarily at research libraries, and will be dealing with "back-end" ILS functionality (not discovery). Participation is encouraged by people who work with an ILS day-to-day, and also by those with theoretical, technical or administrative interests. Registration is available for the Ottawa workshop here.