Front change history: App not responding

Front recorded a critical App outage starting 2025-12-19 17:29 UTC, lasting 3 h 53 min and resolving at 2025-12-19 21:23 UTC. Its postmortem reports US-West-2 API latency from 14:50 UTC to 18:10 UTC prevented website loading and queued messages; no messages were lost. Missed-message and application-webhook backfills were completed.