Glossary

Stage-Gate Process

A delivery and investment method that divides work into phases separated by decision gates, releasing funding stage by stage as evidence accumulates. Discipline on paper; only as strong as its weakest gate.

The stage-gate idea is staged commitment: pay for the next tranche of certainty, not for the whole journey. What organisations often build instead is a corridor of ceremonies through which approved projects travel undisturbed.

Last reviewed 3 July 2026 · Free and ungated

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How the method works

A stage-gate process breaks an initiative into defined stages (concept, feasibility, development, testing, launch, or equivalents) with a gate before each. Every stage has deliverables; every gate has criteria and a decision authority; funding is released one stage at a time. The design goal is to spend the least money required to resolve the largest remaining uncertainty.

What it does for the portfolio when taken seriously

Run honestly, stage gates change portfolio economics. Weak initiatives die at early gates, cheaply, releasing money and people while they can still be redeployed, and leadership gains a legitimate way to fund exploration without committing to delivery. The kill rate is the health indicator. A portfolio where nothing dies after the first gate is not blessed with exceptional judgement; it is running an approval pipeline dressed as a filter.

Where the discipline erodes

  • Stages defined by documentation produced rather than uncertainty resolved, so paperwork advances while knowledge does not.
  • Projects entering the process pre-approved in every way that matters, with gates back-fitted for appearance.
  • Late gates that never kill, because sunk spend and announced dates make stopping unthinkable by stage four.
  • Gate meetings staffed by the people who sponsored the project at stage one, reviewing their own conviction.

When did a gate last kill anything? That is the health check.

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