Validation techniques are methods used to ensure that a product, service, or system meets specified requirements and functions correctly. These techniques help identify errors or issues early in the development process, reducing costs and improving quality. Common validation techniques include testing, inspections, and reviews, each serving to confirm that the final output aligns with user needs and expectations. In software development, validation techniques often involve unit testing, integration testing, and user acceptance testing. These processes help verify that individual components work as intended and that the overall system performs well in real-world scenarios. By employing these techniques, organizations can enhance reliability and user satisfaction.