One of the types of tests is the user acceptance test. It focuses on the behavior of a whole system. User acceptance test ensures the software meets the business requirements. It contains three types:

1. Alpah: The software is tested by development teams internally or a limited group of users
2. Beta: Once the alpha test is done, the software can be moved into beta testing. It involves a larger group of external users and it focuses on the users' feedback and their overall experience.
3. Operational: It involves simulating real-world scenarios to evaluate the behavior of the software under normal conditions