Service Virtualization is the practice of capturing and emulating behaviour and data of dependent systems, third party systems or applications not yet developed or completed. The benefits of Service Virtualization :

• Provide testing capabilities to development teams during unit testing
• Enables earlier and more parallel testing across complex applications
• Accelerates functional and performance testing by starting earlier
• Reduce time-to-market by saving time during development and testing
• Reduce environment cost by virtualizing system interfaces and reducing setup and infrastructure cost