Let us examine Smoke and Sanity testing - Smoke testing essentially checks for the stability of a software build. It can be deemed as a preliminary check before the build goes for testing. Sanity testing is performed after a stable build is received and testing has been performed. It can be deemed as a post-build check, to make sure that all bugs have been fixed. It also makes sure that all functionalities are working as per the expectations. Read More about Smoke Testing vs Sanity Testing