CloudTrail is a service provided by Amazon Web Services (AWS) which logs every single API call within an AWS account, providing deep visibility into activity and allowing for security and operational troubleshooting. While there are no charges to use CloudTrail, standard S3 charges apply to logged data. To analyze this data, customers must ingest it into a third-party service such as Redshift or Athena, or use ChaosSearch, which automatically identifies fields, indexes data, and provides a Kibana interface for visualization. With ChaosSearch, users can identify anomalies in their CloudTrail data, run queries on specific events, and gain insights into API usage and user activity in minutes, without needing to deploy a database or create schemas and mappings.