Jira change history: Disrupted JIRA availability in US East

JIRA’s critical US East disruption started at 2026-09-03 15:57 UTC and resolved at 2026-09-03 17:02 UTC (computed duration: 1 h 4 min), leaving affected users unable to access services. Recovery began at 16:15 UTC after mitigation; the postmortem attributes the disruption affecting Jira and Jira Service Management to a progressive rollout of a caching change.