Current trends show that the vast majority of companies are moving to services-oriented architectures (SOAs) and deploying Web services within and across their IT infrastructure. However, the success of those deployments is determined by the integrations and innovations that Web services make possible and how Web services affect the quality and performance of the mission-critical applications with which they interface. As such, it is crucial to thoroughly test Web services before they are deployed in order to ensure service level compliance in production.