User Acceptance Testing (UAT) is a crucial phase in the software development process where the end-users test the software to ensure it meets their needs and requirements. This testing occurs after the software has passed other testing phases, such as unit and integration testing. UAT helps identify any issues or bugs from the user's perspective, ensuring the product is ready for deployment. During UAT, users interact with the software in real-world scenarios, providing feedback on its functionality and usability. This process helps confirm that the software aligns with business objectives and user expectations, ultimately leading to a more successful product launch.