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A Product Requirements Document is the primary specification artifact that communicates what to build and why. It bridges the gap between problem understanding and engineering implementation by providing clear requirements, success criteria, and scope boundaries. A good PRD enables engineering to build the right thing while maintaining flexibility on implementation details.
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Summarize the Problem
Start with a brief recap of the problem being solved. Link to the problem statement if available. Ensure readers understand why this work matters before diving into what to build.
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Define Goals and Success Metrics
Articulate what success looks like. Include specific, measurable metrics with baselines and targets. These metrics should connect directly to the problem being solved.
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Outline the Solution
Describe the proposed solution at a high level. Focus on user-facing functionality and key capabilities. Include enough detail for stakeholders to evaluate the approach without over-specifying implementation.
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Detail Functional Requirements
Break down what the system must do. Use user stories or requirement statements. Each requirement should be testable . someone should be able to verify if it's met.
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Define Scope Boundaries
Explicitly state what's in scope, out of scope, and deferred to future iterations. Clear scope prevents scope creep and sets realistic expectations.
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Address Technical Considerations
Note any technical constraints, architectural decisions, or integration requirements. Don't design the system, but surface considerations engineering needs to know.
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Identify Dependencies and Risks
List external dependencies, assumptions, and risks that could impact delivery. Include mitigation strategies where applicable.
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Propose Timeline and Milestones
Outline key phases and checkpoints. This helps stakeholders understand the delivery plan without committing to specific dates prematurely.