This talk gives a high level overview of what contract testing is with Pact.io, where it fits into test automation strategy and introducing it to your team. But the hardest part often is how to sell the benefits and understand "why contract testing matters". From this talk you will understand why: It speeds up the development process and provides a faster feedback loop, since contract tests don’t need to communicate to one or more systems. How it enables teams to deploy changes independently and safely. Makes integration issues easier to debug. It promotes better code quality through YAGNI. It facilitates better communication between teams. Contract testing combines the best qualities of an API integration test and a unit test, increasing the confidence to release.