Amplitude experienced a critical incident on December 10, 2025 affecting Data Processing, lasting 5h 5m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Dec 10, 2025, 03:40 AM UTC
Our data processing systems are delayed. This incident started at 6:10pm PDT. Current status: a) Our ingestion systems are working as expected and no data is lost. Our processing systems are not processing newly ingested data. c) Impacted customers will see delayed metrics from /batch endpoint for the last 80 minutes and metrics from real time endpoint for the last 33 minutes. We are investigating the issue and will post an update in an hour or earlier if we identify the issue.
- investigating Dec 10, 2025, 04:21 AM UTC
We've identified the root cause as being a critical dependency in AWS experiencing a high error rate. We are monitoring and communicating with AWS to resolve this as soon as possible.
- identified Dec 10, 2025, 04:51 AM UTC
We have identified the root cause as an AWS dependency that is experiencing errors in both EU and US production environments. We are currently waiting for AWS to resolve the underlying issues and will continue to closely monitor the situation.
- monitoring Dec 10, 2025, 06:10 AM UTC
AWS has resolved the underlying issues. Our data ingestion system in the EU environment has fully recovered, and the US environment is currently in the process of recovering. We will continue to closely monitor the system until full stability is confirmed.
- resolved Dec 10, 2025, 08:46 AM UTC
This incident has been resolved.