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BPEL has become the defacto standard language for composing Web services. However, as every other programming language developers can introduce defects into the code that can lead to undesired consequences when the software is rolled out at the client-side. Therefore, all software development methodologies include testing as one of the important activities. For nearly every […]

Service-Oriented Architecture (SOA) is creating a lot of buzz across the IT industry. Propelled by standards-based technologies like XML, Web Services, and SOAP, SOA is quickly moving from pilot projects to mainstream applications critical to business operations.
One of the key standard accelerating the adoption of SOA is Business Process Execution Language (BPEL) for Web Services. […]

Good reading on SOA from The Open Group
http://www.opengroup.org/projects/soa-book/

Here is a interesting presentation on how to build a SOA platform using open source technologies for an educational institution.
You can download the presentation from here.
The architecture snapshot.

Here are 2 papers describing how to applying SOA in SDP for telecom operators.
The papers

Review the important enabling role that Web Services technologies play in an SOA implementation;

State of the Art in the Service Layer architecture (IMS 3GPP, ETSI/TISPAN, OMA OSE);

See how a Service Oriented Architecture (SoA) can change the way new services are […]