The next phase, that is, the build phase, commences after the completion of the design phase. Design provides the guidelines, but the build phase really implements the design so that execution of the test can be carried out later. The first activity in the build phase is to plan the various activities for testing. However, building a comprehensive test plan is as important as executing the test itself. Apart from the test plan, testing the build phase also focuses on setting up a proper test environment, test schedule, and testing processes.