Definition
Validation is the process of confirming that a system, process, or product meets its intended requirements and specifications. It involves objective evidence to demonstrate that stated needs have been fulfilled. In practice, validation ensures that what was built or implemented actually solves the problem it was designed to address. This is crucial for delivering reliable solutions and avoiding costly rework or failures. For example, validating a new software feature by having end users test it confirms it meets their workflow needs. It is often confused with verification, which checks if the product was built correctly according to design, whereas validation confirms the right product was built. Understanding validation is essential for domains like IT service management and quality assurance, appearing in certifications such as ITIL Foundation.