Amazon CloudWatch Logs

2025/09/16 - 4 updated api methods

Changes   Cloudwatch Logs added support for 2 new API parameters in metric and subscription filter APIs to filter log events based on system field values and emit system field values as dimensions and send them to customer destination as additional metadata.

2025/07/18 - 1 new 3 updated api methods

Changes   CloudWatchLogs launches GetLogObject API with streaming support for efficient log data retrieval. Logs added support for new AccountPolicy type METRIC_EXTRACTION_POLICY. For more information, see CloudWatch Logs API documentation

2025/07/16 - 10 updated api methods

Changes   CloudWatch Logs updates: Added X-Ray tracing for Amazon Bedrock Agent resources. Logs introduced Log Group level resource policies (managed through Put/Delete/Describe Resource Policy APIs). For more information, see CloudWatch Logs API documentation.

2025/06/18 - 3 updated api methods

Changes   Added CloudWatch Logs Transformer support for converting CloudTrail, VPC Flow, EKS Audit, AWS WAF and Route53 Resolver logs to OCSF v1.1 format.

2025/05/14 - 1 new 1 updated api methods

Changes   This release adds a new API "ListLogGroups" and an improvement in API "DescribeLogGroups"

2025/04/30 - 2 updated api methods

Changes   CloudWatch Logs supports "DELIVERY" log class. This log class is used only for delivering AWS Lambda logs to Amazon S3 or Amazon Data Firehose.

2024/12/02 - 4 new 5 updated api methods

Changes   Adds PutIntegration, GetIntegration, ListIntegrations and DeleteIntegration APIs. Adds QueryLanguage support to StartQuery, GetQueryResults, DescribeQueries, DescribeQueryDefinitions, and PutQueryDefinition APIs.

2024/11/22 - 9 new 8 updated api methods

Changes   Adds "Create field indexes to improve query performance and reduce scan volume" and "Transform logs during ingestion". Updates documentation for "PutLogEvents with Entity".

2024/10/29 - 1 updated api methods

Changes   Added support for new optional baseline parameter in the UpdateAnomaly API. For UpdateAnomaly requests with baseline set to True, The anomaly behavior is then treated as baseline behavior. However, more severe occurrences of this behavior will still be reported as anomalies.

2024/10/25 - 1 updated api methods

Changes   Adding inferred token name for dynamic tokens in Anomalies.

2024/09/04 - 2 new 3 updated api methods

Changes   Update to support new APIs for delivery of logs from AWS services.

2024/08/30 - 1 updated api methods

Changes   This release introduces a new optional parameter: Entity, in PutLogEvents request

2024/03/19 - 1 updated api methods

Changes   Update LogSamples field in Anomaly model to be a list of LogEvent

2024/02/06 - 1 updated api methods

Changes   This release adds a new field, logGroupArn, to the response of the logs:DescribeLogGroups action.

2024/01/10 - 3 updated api methods

Changes   Add support for account level subscription filter policies to PutAccountPolicy, DescribeAccountPolicies, and DeleteAccountPolicy APIs. Additionally, PutAccountPolicy has been modified with new optional "selectionCriteria" parameter for resource selection.

2023/12/12 - 1 new api methods

Changes   This release introduces the StartLiveTail API to tail ingested logs in near real time.

2023/11/27 - 7 new 2 updated api methods

Changes   Added APIs to Create, Update, Get, List and Delete LogAnomalyDetectors and List and Update Anomalies in Detector. Added LogGroupClass attribute for LogGroups to classify loggroup as Standard loggroup with all capabilities or InfrequentAccess loggroup with limited capabilities.

2023/11/09 - 15 new api methods

Changes   Update to support new APIs for delivery of logs from AWS services.