Other forms: rollouts
A rollout is releasing something in stages across places or groups. A phased rollout, the rollout begins, delay the rollout.
Doing it in stages is deliberate: a fault found in the first region can be fixed before the rest sees it, which is why software and vaccines both go out this way. A rollout that goes to everybody at once is a decision to take the whole risk at once.
1nounrolloutReleasing something in stages across places or groups.
“The rollout of the new app will start in Canada before reaching other countries.”
rollout is a release.
Deverbal from roll out.
Etymology from Wiktionary, CC BY-SA