This article explains how Authress maintained service availability despite the significant AWS outage on October 20th. It discusses the importance of reliability in their authentication services and the architectural strategies they implemented to achieve a five-nines SLA.

AWS faced a major outage on October 19-20 due to a race condition in DynamoDB’s DNS management, disrupting multiple services in the Northern Virginia region. While the incident was brief, many customers experienced issues for up to 15 hours, prompting discussions on AWS reliability and future improvements.

This article discusses the transition from AWS to bare-metal infrastructure, detailing the cost savings and operational changes experienced over two years. The authors address common questions from the tech community, highlighting their significant savings, improved reliability, and ongoing cloud utilization where it makes sense.