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matrix·Impact–Effort (Sondhi 1999)·product, management·complexity 1/3

Impact-effort feature prioritization

2×2 impact × effort table sorting a backlog into Quick Wins / Major Projects / Fill-ins / Thankless — the classic PM prioritization grid.

For the product manager

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Matrix — Sprint Planning — Q2 Backlog Matrix diagram (impact-effort template), quadrant mode, 0 point(s) Sprint Planning — Q2 Backlog Quick Wins • Add bulk-delete to inbox • Surface error message inline • Fix mobile menu z-index bug Major Projects • Rebuild billing on new stripe API • Multi-tenant workspace support Fill-ins • Brand color audit • Update tooltip copy Thankless • Animated empty-state illustrations • Internal admin dashboard polish
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Scenario

A solo PM running quarterly planning ranks the backlog. The table form is what stakeholders actually want to see in the planning doc — a sortable list per quadrant, not a scatter plot. Quick Wins go in the top-left (high impact, low effort) — ship them this sprint. Major Projects are the bets (high impact, high effort) — pick at most one per quarter. Thankless work (low impact, high effort) is where teams accidentally burn quarters.

Annotation key

How to read

If your Quick Wins cell is empty, that's a smell — it usually means the PM hasn't broken down work small enough. If your Major Projects cell has more than one item per engineer-quarter, you're overcommitting. The Thankless cell is where you have the conversation about cutting scope or pushing to next quarter.

Matrix syntax