Verification and Validation in Software Testing

Verification is the process of checking that a software achieves its goal without any bugs. It is the process to ensure whether the product that is developed is right or not. It verifies whether the developed product fulfills the requirements that we have. Verification is static testing.
Verification means Are we building the product right?

Validation is the process of checking whether the software product is up to the mark or in other words product has high level requirements. It is the process of checking the validation of product i.e. it checks what we are developing is the right product. it is validation of actual and expected product. Validation is the dynamic testing.
Validation means Are we building the right product?

Now The basic differences between Verification and Validation is :

#	Verification	Validation
1.	Verification is the process of evaluating the artifacts as well as the process of software development in order to ensure that the product being developed will comply with the standards.	Validation is the process of validating that the developed software product conforms to the specified business requirements.
2.	It is a static process of analyzing the documents and not the actual end product.	It involves dynamic testing of a software product by running it.
3.	Verification is a process-oriented approach.	Validation is a product-oriented approach.
4.	Answers the question – “Are we building the product right?”	Answers the question – “Are we building the right product?”
5.	Errors found during verification require lesser cost/resources to get fixed as compared to be found during the validation phase.	Errors found during validation require more cost/resources. Later the error is discovered higher is the cost to fix it.
6.	Errors found during verification require lesser cost/resources to get fixed as compared to be found during the validation phase.	Errors found during validation require more cost/resources. Later the error is discovered higher is the cost to fix it.