A feature flag separates code deployment from customer access. Give each flag an owner, a defined audience and an expected removal point.
Maintain both supported paths
For a fictional dashboard redesign, old and new experiences must remain coherent during rollout. Check links, exports and permissions in both states. A visual switch does not undo a data migration that has already run.
| Decision | Example |
|---|---|
| Audience | Explicitly selected pilot accounts |
| Observation | Errors and principal task completion |
| Stop condition | Evidence that triggers closure |
| Ownership | Person authorised to change the flag |
| Retirement | Removal of obsolete branching code |
Avoid unsupported combinations
Several flags can create combinations nobody has tested. Limit dependencies and document supported configurations. For paid features, distinguish rollout eligibility from commercial entitlement; they are different decisions even when they affect the same screen.
Does disabling the flag guarantee rollback?
No. The feature may already have written data or triggered external actions. State what closure stops and what it cannot reverse. Rehearse disabling the feature against a representative workflow before public release, then remove the flag when the transition is complete rather than leaving permanent operational ambiguity.
Roll out by account before assuming regional readiness
A region label alone may not identify the right pilot population. Select accounts whose workflows and support arrangements are understood. Record why they were chosen so a successful pilot is not extrapolated to every customer sharing a language.
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