Requirements Specification

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Requirements specification is the step where teams write down what a system needs to achieve in a form that others can share and verify. It turns stakeholder conversations into clear statements that guide design, implementation, and testing. Standards such as ISO/IEC/IEEE 29148 describe what makes a good requirement, with emphasis on clarity and testability. In practice, a written specification prevents silent disagreements where different teams assume the system should behave in different ways.

As the product evolves, requirements can be updated and traced so everyone understands what changed and why. When requirements are vague, teams often see rework and bugs caused by unclear expectations. When requirements are clear, teams move faster because decisions are easier and testing can be tied to shared criteria.

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