The function of a software testing framework is to provide a structured environment for executing tests, managing test cases, and evaluating software performance and functionality. A testing framework typically includes various tools and libraries that facilitate automated testing, making it easier to identify and address defects early in the development lifecycle. By standardizing testing processes, these frameworks improve efficiency and consistency. They support various testing types, including unit, integration, and performance testing, promoting a robust quality assurance process. Ultimately, software testing frameworks contribute to delivering reliable software products and enhancing user satisfaction.