PRD vs User Stories
When to use each — and how they work together without duplicating work.
PRDs answer "what and why" for an initiative. User stories answer "what does a slice of delivery look like for one persona?" They overlap if you force them to — but they serve different readers.
PRD
- Initiative-level scope
- Problem, goals, non-goals
- Shared by PM, design, eng, leadership
- Updated when direction shifts
- Links to decisions and discovery
User story
- Delivery-level slice
- As a… I want… so that…
- Primary reader: engineering squad
- Lives in backlog / sprint
- Acceptance criteria for one increment
How they connect
- 1
PRD sets the frame
Initiative goals and boundaries stay in the PRD (or snapshot).
- 2
Stories decompose delivery
Break the PRD into sprint-sized pieces with acceptance criteria.
- 3
Decisions live outside both
Link decision records from PRD and stories — do not bury choices in story text.
- 4
Sync on change
When a story reveals new scope, update the PRD or log a decision — do not let drift accumulate silently.