In software testing, a Build Verification Test (BVT), also known as Build Acceptance Test, is a set of tests run on each new build of a product to verify that the build is testable before the build is released into the hands of the test team. The build acceptance test is generally a short set of tests, which exercises the mainstream functionality of the application software. Any build that fails the build verification test is rejected, and testing continues on the previous build (provided there has been at least one build that has passed the acceptance test).
BVT is important because it lets developers know right away if there is a serious problem with the build, and they save the test team wasted time and frustration by avoiding test of an unstable build.