What is the difference between verification and validation in software testing.

Software Testing - Interview Questions

Validation : It is defined as a process that involves dynamic testing of software products by running it. This process validates whether we are building the right software that meets that customer requirement or not. It involves various activities like system testing, integration testing, user acceptance testing, and unit testing.

Verification : It is defined as a process that involves analyzing the documents. This process verifies whether the software conforms to specifications or not. Its ultimate goal is to ensure the quality of software products, design, architecture, etc.

Verification	Validation
It checks whether the software meets the specification or not.	It checks whether the specification captures the customer’s needs or not.
It is a type of static testing.	It is a type of dynamic testing.
There is no requirement of executing the code.	There is a requirement for executing the code.
This process is performed by the QA team to make sure that the software is built as per the specifications in the SRS document.	This process is performed with the involvement of the testing team.
Reviews, walkthroughs, inspections, and desk-checking are some methods that can be used in verification.	Black box testing, white box testing, and non-functional testing are some methods that can be used during validation.
It identifies the bugs or errors early in the development process.	It can identify the bugs or errors that the verification process cannot catch.
It is performed before the validation process.	It is performed after the verification process.