Hi Disha, Selenium framework is a code structure for making code maintenance simpler, and code readability better. A framework involves breaking the entire code into smaller pieces of code, which test a particular functionality. The code is structured such that, the “data set” is separated from the actual “test case” which will test the functionality of the web application. It can also be structured in a way wherein, the test cases which need to be executed are called (invoked) from an external application (like a .csv).
Without a framework in place, there will be one test case which will comprise the entire test functionality. So its pretty obvious that a test case so huge will be tough to read. Even if you want to modify any functionality later, then you will have a tough time modifying the code. So the implementation of a framework, will result in smaller but multiple code pieces.