# Reliability lessons from the 2025 AWS DynamoDB outage

DevFeed: [Reliability lessons from the 2025 AWS DynamoDB outage](<https://devfeed.tech/articles/reliability-lessons-from-the-2025-aws-dynamodb-outage-11694.md>)

Original publisher: [Read original article](<https://www.gremlin.com/blog/reliability-lessons-from-the-2025-aws-dynamodb-outage>)

Author: Gavin Cahill

Published: 2025-11-07T00:00:00Z

Content type: article

Language: en

Sources: [Gremlin Blog](<https://devfeed.tech/sources/gremlin-blog.md>)

Topics: [Amazon DynamoDB](<https://devfeed.tech/topics/amazon-dynamodb.md>), [Amazon Web Services](<https://devfeed.tech/topics/aws.md>), [Complex Systems](<https://devfeed.tech/topics/complex-systems.md>), [systems](<https://devfeed.tech/topics/systems.md>), [Cloud](<https://devfeed.tech/topics/cloud.md>)

Tags: [2025](<https://devfeed.tech/tags/2025.md>), [amazon-dynamodb](<https://devfeed.tech/tags/amazon-dynamodb.md>), [applications](<https://devfeed.tech/tags/applications.md>), [aws](<https://devfeed.tech/tags/aws.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [industry](<https://devfeed.tech/tags/industry.md>), [outage](<https://devfeed.tech/tags/outage.md>), [outages](<https://devfeed.tech/tags/outages.md>), [systems](<https://devfeed.tech/tags/systems.md>)

## AI overview

The article examines reliability lessons from the October 2025 AWS DynamoDB outage in US-EAST-1, which began with a DNS issue and was followed by an Amazon EC2 outage. It recommends mapping service dependencies, testing how applications behave when dependencies are unavailable, and distinguishing critical from non-critical dependencies.

## Source excerpt

In October 2025, Amazon DynamoDB had a massive outage that took down hundreds of systems. Find out what your team can do to minimize the impact of similar outages in the future.