What is the difference between validation and verification of requirements?

Requirements validation is the process of checking whether the final product meets the expectations and needs of the customer. It answers the question: "Are we making the right product?"

Requirements verification is the process of checking the correctness and completeness of the requirements themselves, i.e., whether they conform to standards, are correctly formulated, and are feasible. Verification answers the question: "Are we making the product correctly?"

Example:

• Verification: Checking that requirements are consistent and understandable to developers.
• Validation: Testing the finished product with users to ensure it solves their problems.