Individual skill

holdback-experiment-design

Design degradation holdbacks and long-term cumulative holdbacks for product experiments and feature rollouts. Use when a team needs a long-term counterfactual, wants to measure delayed impact after launch, is worried about metric degradation over time, needs to decide holdback size or duration, or must weigh the user/business cost of withholding a feature.

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# Holdback Experiment Design

Use this skill to plan holdbacks that preserve a comparison group after a
feature rollout. Holdbacks are useful when effects may appear later, accumulate,
or degrade after launch.

## Source Traceability

Primary source: Practical A/B Testing by Leemay Nassery. Guidance is
transformed and paraphrased from chapter 3 lines 2487-2836. Experiment-type
context comes from chapter 3 lines 2013-2486.

## Related Advanced Skills