Product

PRD (Product Requirements Document)

A Product Requirements Document (PRD) is a document that describes what a product or feature should do — the problem it solves, who it's for, and what functionality it needs — before development begins.

In depth

A PRD bridges product strategy and engineering. It answers: what are we building, why, for whom, and how will we know it's successful?

Typical PRD sections: 1. Problem statement and background 2. Goals and success metrics 3. User personas / target users 4. Feature requirements (what, not how) 5. User flows and wireframes 6. Edge cases and error states 7. Out of scope (explicit exclusions) 8. Timeline and milestones 9. Open questions

For MVPs, PRDs are often lightweight — a Notion page, not a 50-page Word doc. The goal is shared understanding between founders, designers, and developers.

PRD vs User Stories: PRDs describe what to build at a feature level. User stories describe specific user interactions. Both are useful and complement each other.

Real example

PRD for 'User Authentication': Problem: users need to securely access their account. Goal: users can sign up, log in, and reset their password. Success: <2% failed login rate, <30s password reset flow. Scope: email/password only — OAuth deferred to v2.

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