CloudWatch Logs can be exported to S3 automatically for effective troubleshooting and root-cause analysis. AWS CloudWatch has limitations, such as restrictive log retention issues, making it difficult to analyze logs at scale. Exporting logs to S3 allows data to be stored and processed longer term for a lower price. Amazon provides various native services and open-source tools to export logs to S3, including using Kinesis Streams and Lambda extensions. The CloudWatch2S3 tool offers a single CloudFormation template to set up automatic exports, while ChaosSearch can index log data across months and years with a huge ecosystem of log shippers and tools.