Validation testing is a process used to ensure that a product, system, or software meets the specified requirements and functions correctly in real-world scenarios. This type of testing verifies that the end product fulfills its intended purpose and satisfies user needs. It often involves comparing the final output against the original specifications to confirm that all features work as expected. During validation testing, various methods such as user acceptance testing and functional testing may be employed. This helps identify any discrepancies or issues before the product is released to the market. Ultimately, validation testing aims to enhance quality and user satisfaction by ensuring reliability and performance.