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What is the difference between requirements and specifications?

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OK, I'm confused. Can someone explain to me what is the difference between requirements and specifications (if there is any). I always thought they mean the same thing.
asked 9 years ago by anonymous

1 Answer

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Specifications are actually requirements, but not the other way around. I will explain.

Requirements describe what is wanted from the product, and what is not wanted. Requirements can either be implementable or non-implementable. For example, we want the new website to be developed in PHP (implementable), with an attractive, colorful design (implementable), appealing to the youth (non-implementable). The website should not be boring (non-implementable).

Specifications are implementable requirements that are sufficient to build the product. An example of a specification (in addition to the above implementable requirements) would be "The website has to be hosted on high speed servers in the US", another example of a specification "The code should be documented"
answered 9 years ago by humblepm (17,390 points)

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