The Difference Between Verification and Validation in Software Testing

Verification and validation are two essential processes in software testing that play a critical role in ensuring the quality of a software product. Let's define each and provide examples of both in a testing scenario.

Verification:

Verification is the process of evaluating whether a system meets the specified requirements and that it is correctly implemented. It is a static process that focuses on ensuring that the software is being built right.

Example: In a testing scenario, verifying that a login form only accepts valid email addresses and passwords according to the defined requirements would be a verification task.

Validation:

Validation, on the other hand, is the process of evaluating software to determine whether it meets the customer's requirements and expectations. It is a dynamic process that focuses on ensuring that what has been built is right.

Example: Performing user acceptance testing (UAT) to validate that the software meets the end-users' needs and functions as expected in a real-world environment is an example of validation in a testing scenario.

By understanding the distinction between verification and validation, software development teams can effectively assess and improve the quality of their software products.