In the world of testing, the differences between Verification and Validation can confuse. While the distinction may seem insignificant, the two cover quite separate purposes.
Once we are being asked to do a verification on a certain project, not to mention the project validation. What first comes to our mind might be how they are different?
If the difference between them is a little confusing, you’re not alone – countless development and testing professionals are the same. Don't worry, as, in this article, we will give you a glimpse of the difference between verification and validation.
- Verification is the verifying process that includes checking documents, design, code, and program, while validation is a dynamic mechanism of testing and validating the actual product.
- Verification does not involve executing the code, while validation always does.
- Verification uses methods like reviews, walkthroughs, inspections, and desk- checking, etc, on the other hand, validation uses methods like Black Box Testing, White Box Testing, and non-functional testing.
- Validation checks whether the software meets the requirements and expectations of a customer; meanwhile, validation is to make sure whether the software conforms to specification is checked.
- Verification helps to find bugs early in the development cycle, while validation can find bugs that the verification process cannot catch.
- Validation's target is an actual product, on the other hand, verification's target could be application and software architecture, specification, complete design, high level, and database design, etc.
- Validation ensures that specifications meet customer requirements, while verification ensures that products meet the specifications.
- Verification evaluates the process and the product in development, while validation evaluates the product itself.
- Verification helps the product be built the right way. The objective of validation is to build the right product.
- Inspection and document review are verification tools. Validation activities include testing the product.
- The project management team performs the verification process, while validation is performed by the client or customer.
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