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. "Independent verification and validation" can be abbreviated as "
IV&V".