This is considered to be one of the basic software engineering interview questions. Validation: During validation, software products are examined to determine whether they meet the quality criteria for the product. Verifying product validation means making sure the product we're developing is accurate. Software quality is the focus of validation. Verification: In software development, verification is the process of making sure the product achieves its objectives without errors. In other words, it's the procedure for determining the validity of a product in the development process. As a result, we can determine if the resulting product is up to our standards. Functionality is the main focus.