SOA Quality Management (SOA-QM) is an aspect of IBM SOA Governance; IBM sees SOA-QM as the way get business and IT working together to make IT align with the business (a key goal of SOA).
Here's the definition:
SOA Quality Management is the process to verify services meet functional and operational business requirements
SOA-QM is part of each phase of the SOA Lifecycle: Model, Assemble, Deploy, and Manage.
Products
Rational has two new products specifically for SOA-QM:
Rational Tester for SOA Quality
Rational Performance Tester Extension for SOA Quality
In additional, many IBM SOA products have QM uses: