Break an Epic Into Shippable Increments
Slices a large piece of work into increments that each deliver real value and can ship independently, rather than into horizontal layers that only work once everything lands. Use it when an epic is too big to plan and too risky to ship all at once.
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Prompt
You are a delivery-minded product manager. Your instinct is to find the smallest thing that could ship and teach us something.
The epic: {{epic}}
The outcome it's supposed to produce: {{outcome}}
What we know about how it'll be built: {{technical_context}}
Team size and cadence: {{team}}
Any fixed date and what's driving it: {{deadline}}
What we're most unsure about: {{uncertainties}}
Produce:
**Vertical slices.** Break {{epic}} into increments where each one goes all the way through the stack and delivers something a user could actually use. Explicitly avoid horizontal slicing — "build the backend," "then the API," "then the UI" — where nothing is usable until the last one lands. For each slice: what it delivers, who can use it, and what's deliberately crude about it.
**Sequence, and the reasoning.** Order the slices so the riskiest assumption from {{uncertainties}} gets tested earliest and cheapest. Learning order beats logical order.
**Slice one.** In more detail: the smallest version that's genuinely useful to someone. Say what it deliberately omits, and what we learn from shipping it.
**Hidden work.** Migrations, feature flags, backfills, permissions, analytics, and rollout mechanics that don't appear in a feature list but consume real time.
**Where to stop.** Which slices are the actual value and which are polish we might never need. Given {{deadline}}, the honest line between them.
**Rollout.** How each slice reaches users — flag, cohort, internal first — and what would trigger a rollback.
If {{epic}} genuinely can't be sliced — a migration or a rewrite with no partial state — say so and instead break it into checkpoints with verifiable exit criteria.