A project or release can have multiple regression plans to organize testing activities. For example, you can create different plans for core functionality testing, new features, and performance testing. A plan can consist of a number of suites, each of which is made up of a number of individual regression tests.
The regression suites act as templates for the test sets, which are generated to represent testing activities performed throughout the release. An owner may be assigned to a regression plan or suite to indicate the person responsible for coordinating its testing activities.
A single regression suite is typically executed under a number of different environments. The combination of a suite and an environment creates a test set, which is the asset you can schedule before or during sprint planning and execute its tests. The process of generating a test set creates an acceptance test for each assigned regression test under the suite. The acceptance test is the executable form of a regression test.