CAPM Practice: Validate requirements through product delivery

Fitness for purpose is the practical requirements validation standard — does the solution actually work for real people in real contexts? A technically correct solution that users find awkward, slow, or unhelpful fails fitness for purpose even if it passes all tests.

**Why not B:** Fitness for purpose is not about the qualifications or fitness of team members. It is a requirements and quality concept that evaluates whether a solution or product adequately serves the intended business need. Team capability assessment is a separate resource management concern.

**Why not C:** Physical durability refers to a product's ability to withstand wear and environmental conditions, which is a narrow engineering specification. Fitness for purpose is a broader concept that asks whether the overall solution meets the business objectives and user needs it was designed to address.

**Why not D:** While technical performance specifications describe measurable system characteristics, fitness for purpose is a higher-level evaluation of whether the solution fulfills its intended business function. A product can meet all technical specifications yet still fail the fitness-for-purpose test if those specifications were misaligned with actual user needs.