Checklist

Experimentation Infrastructure — Feature Flag Implementation Checklist

Actionable, interactive checklist to validate feature-flag readiness for experimentation, rollout, rollback, and long-term cleanup. Capture ownership, evidence, tags for observability, and a team readiness score. Responses are saved for audit and follow-up.

Interactive Tool

Experimentation Infrastructure — Feature Flag Implementation Checklist

This checklist helps teams validate that a feature flag is safe, observable, owned, auditable, and removable. Complete fields to capture evidence, support rollout and rollback, and produce a team readiness score.

Save responses to support audits, follow-up cleanup, and reproducible experimentation. If a field does not apply, mark it and add a short note so reviewers understand the context.

Human-friendly name for the flag (e.g., New checkout UI)
Unique technical key used in code/config (e.g., checkout_ui_v2)
Team responsible for the flag's lifecycle and decisions
Primary owner (name / email / handle)
Why was this flag created? Intended experiments or rollout purpose
Where will this flag be available?
Who or what will the flag affect?
Default value when the flag is not targeted
Is there a tested immediate kill-switch to turn the flag off for all users?
Are flag evaluations logged for auditing (who saw what, when)?
Describe log destination, retention, and how to query exposures. If not enabled, explain why.
List the metrics and the specific queries or dashboards you'll use to measure impact (include links).
Succinct measurable hypothesis this flag will test (if applicable).
Quantitative criteria that determine whether the change succeeded.
Phases, targeting rules, percentage ramps, and timing.
How you'll revert safely and verify system stability after rollback.
Link to real-time monitoring or dashboards for the experiment/feature.
Tags to attach to logs and metrics to aid filtering (e.g., flag=<key>, experiment=<id>).
Has the flag's data usage been reviewed for privacy and compliance?
Describe any PII, retention limits, or consent implications.
What automated or manual tests exist for flag logic and behavior?
Other systems, services, or flags that this feature depends on or may affect.
How and when will this flag be removed?
If time-based, how many days until automatic cleanup? Leave blank if not applicable.
Person/team responsible for removing stale flags.
Team's confidence that this flag is safe to experiment with (1 low — 5 high).
1.0 10.0
Explain any open concerns, mitigation plans, or follow-up actions required.
Status for release/experiment approval
Name / email of approver
Date of approval (YYYY-MM-DD)
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