define validation verification
IV&V redirects here. For NASA's IV&V Facility, see Independent Verification and Validation Facility. Verification and validation are independent procedures that are used together for checking that a product, service, or system meets requirements and specifications and that it fulfills its intended purpose.These are critical components of a quality management system such as ISO 9000.The words verification and validation are sometimes preceded with independent, indicating that the verification and validation is to be performed by a disinterested third party.he words verification and validation are sometimes preceded with independent, indicating that the verification and validation is to be performed by a disinterested third party.