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Verification Vs Validation





The Process of determining whether or not the Product of the given phase in the life cycle fulfill the set of established requirement

The Process of evaluating a system or component during or at the end of the development life cycle, to determine whether it satisfies the specified requirement.


It answers the question, “ Are we building the system right ”

It answer the question “Did we build the right system”

It answer the question “Did we build the right system”


Ex: Review (Include Inspection and Walkthrough)

Ex: Testing

  1. Vishal
    May 6, 2009 at 8:46 pm

    The second difference given is wrong…..

    It should be –

    verification = Did we build the system right…(conformance to specifications)

    validation = did we build the right system(Conformance to customer requirements)

    • May 9, 2009 at 9:10 am

      Hi Vishal
      Thanks for notification.


  2. Alexey
    March 9, 2011 at 9:04 pm

    Guys, it is impossible to distinguish them. When you test software, you test it against requirements (written or implied). If written requirements do not agree with intended use, this is requirements verification, not product validation. There is no point in two terms.

  3. Anonymous
    May 19, 2013 at 1:23 pm

    What’s up friends, how is all, and what you would like to say on the topic of this piece of writing, in my view its actually amazing designed for me.

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