What does the Tester primarily ensure in software development?

In software development, the primary role of the Tester is to ensure that the software works as expected. This involves executing various tests to identify any defects or issues within the software before it is released to users. Testers create and execute test cases, run functional tests, performance tests, and usability tests to validate that the software meets specified requirements and operates correctly under different conditions. The goal is to catch any errors early in the development process, ensuring a high-quality product that fulfills its intended purpose without major flaws.

While budget management, software documentation, and user training are important aspects of a project, they are not the primary responsibilities of a Tester. Their focus is squarely on the functionality and reliability of the software itself, making sure that it performs as intended and provides a seamless experience for users.