Materialize incident

Degraded availability for Cloud customers in us-west-2 due to upstream AWS credential service disruption

Minor Resolved View vendor source →

Materialize experienced a minor incident on September 3, 2026, lasting —. The incident has been resolved; the full update timeline is below.

Started
Sep 03, 2026, 09:43 PM UTC
Resolved
Sep 03, 2026, 09:43 PM UTC
Duration
—
Detected by Pingoru
Sep 03, 2026, 09:43 PM UTC

Update timeline

  1. resolved Sep 03, 2026, 09:43 PM UTC

    Status: Resolved Between 21:12 UTC and 22:18 UTC on September 3, AWS experienced elevated error rates in its Security Token Service (STS) in the us-west-2 region, which AWS reported on its Health Dashboard. Materialize environments in that region use STS to obtain credentials for object storage access, and requests for those credentials failed or timed out during the event. Some environments in the region experienced degraded performance during this window. Query results remained correct throughout, and no data was lost. The upstream issue was resolved by AWS at 22:18 UTC and all affected environments recovered.