Cloudflare incident on August 21, 2025

On August 21, 2025, an influx of traffic directed toward clients hosted in AWS us-east-1 caused severe congestion on links between Cloudflare and us-east-1. In this post, we explain what the failure was, why it occurred, and what we’re doing to make sure this doesn’t happen again.

Engradar shows a summary and links to the original article. The full article is hosted on blog.cloudflare.com.