Document history - Amazon CloudWatch

Document history

The following table describes important changes in each release of the Amazon CloudWatch User Guide, beginning in June 2018. For notification about updates to this documentation, you can subscribe to an RSS feed.

ChangeDescriptionDate

Updated IAM policy

CloudWatch updated the CloudWatchApplicationSignalsServiceRolePolicy policy. The scoping of the logs:StartQuery and logs:GetQueryResults permissions in this policy was changed to add arn:aws:logs:*:*:log-group:/aws/appsignals/*:* and "arn:aws:logs:*:*:log-group:/aws/application-signals/data:*" to enable Application Signals on more architecures. This policy is attached to the AWSServiceRoleForCloudWatchApplicationSignals service-linked role.

April 18, 2024

Internet Monitor provides a global internet weather map to authenticated AWS customers

Amazon CloudWatch Internet Monitor now displays a global internet weather map that is available in the console to all authenticated AWS customers. To view the map, in the Amazon CloudWatch console, navigate to Internet Monitor.

April 16, 2024

CloudWatch Container Insights with enhanced observability for Amazon EKS can collect AWS Neuron metrics

You can now use CloudWatch Container Insights with enhanced observability for Amazon EKS collect AWS Neuron metrics Amazon EKS clusters.

April 16, 2024

CloudWatch Application Signals adds a Service overview tab and more metrics to aid in diagnostics

A new Service overview tab displays an overview of your service, including number of operations, dependencies, synthetics, and client pages. The tab shows key metrics for your entire service, and top operations and dependencies. You can also now view X-Ray traces that are correlated with issues including faults, errors, and latency problems.

April 16, 2024

CloudWatch Container Insights with enhanced observability for Amazon EKS adds support for Windows

You can now use CloudWatch Container Insights with enhanced observability for Amazon EKS collect metrics from Windows worker nodes on Amazon EKS clusters.

April 10, 2024

CloudWatchApplicationSignalsServiceRolePolicy IAM policy updated

CloudWatch changed the scope of a permission in CloudWatchApplicationSignalsServiceRolePolicy. The scope of the cloudwatch:GetMetricData permission was changed to * so that Application Signals can retrieve metrics from sources in linked accounts.

April 8, 2024

Amazon CloudWatch Internet Monitor now supports cross-account observability

You can now use Internet Monitor cross-account observability to monitor your applications that span multiple AWS accounts within a single AWS Region.

March 29, 2024

CloudWatchAgentServerPolicy and CloudWatchAgentAdminPolicy policies updated

CloudWatch added permissions to both the CloudWatchAgentServerPolicy and CloudWatchAgentAdminPolicy policies to allow the CloudWatch agent to publish X-Ray traces and modify log group retention periods. In both policies, the xray:PutTraceSegments, xray:PutTelemetryRecords, xray:GetSamplingRules, xray:GetSamplingTargets, xray:GetSamplingStatisticSummaries and logs:PutRetentionPolicy permissions were added

February 12, 2024

New service linked role and IAM policy for CloudWatch Network Monitor

CloudWatch added a new service-linked role, called AWSServiceRoleForNetworkMonitor. CloudWatch added this new service-linked role to allow you to create monitors to fetch network metrics between source subnets and destination IP addresses. The new CloudWatchNetworkMonitorServiceRolePolicy IAM policy is attached to this role, and the policy grants permission to CloudWatch to fetch network metrics on your behalf.

December 22, 2023

CloudWatch releases Amazon CloudWatch Network Monitor

CloudWatch released a new feature, Amazon CloudWatch Network Monitor. This is a new active network monitoring service that identifies if a network issues exists within the AWS network or your own company network.

December 22, 2023

CloudWatchReadOnlyAccess policy updated

CloudWatch added existing read-only permissions for CloudWatch Synthetics, X-Ray, and CloudWatch RUM and new read-only permissions for CloudWatch Application Signals toCloudWatchReadOnlyAccess so that users with this policy can triage and diagnose service health issues as reported by CloudWatch Application Signals. The cloudwatch:GenerateQuery permission was added so that users with this policy can generate a CloudWatch Metrics Insights query string from a natural language prompt.

December 5, 2023

CloudWatchFullAccessV2 policy updated

CloudWatch added existing permissions to CloudWatchFullAccessV2 for CloudWatch Synthetics, X-Ray, and CloudWatch RUM, and added new permissions for CloudWatch Application Signals so that users with this policy can fully manage Application Signals to triage and diagnose issues with service health.

December 5, 2023

New service-linked role and new IAM policy

CloudWatch added a new service-linked role, called AWSServiceRoleForCloudWatchApplicationSignals. CloudWatch added this new service-linked role to allow CloudWatch Application Signals to collect CloudWatch Logs data, X-Ray trace data, CloudWatch metrics data, and tagging data from applications that you have enabled for CloudWatch Application Signals. The new CloudWatchApplicationSignalsServiceRolePolicy IAM policy is attached to this role, and the policy grants permission to CloudWatch Application Signals to collect monitoring and tagging data from other relevant AWS services.

November 30, 2023

CloudWatch launches Preview release of Application Signals

CloudWatch Application Signals is in Preview. Use Application Signals to instrument your applications on AWS so that you can monitor current application health, create service level objectives (SLOs), and track long-term application performance against your business objectives. For more information, see Application Signals.

November 30, 2023

CloudWatch adds support for querying other data sources

You can use CloudWatch to query, visualize, and create alarms for metrics from other data sources For more information, see Querying metrics from other data sources.

November 26, 2023

CloudWatch Metrics Insights supports natural language query generation

CloudWatch Metrics Insights supports natural language query to generate and update queries. For more information, see Use natural language to generate and update CloudWatch Metric Insights queries.

November 26, 2023

CloudWatch releases Container Insights with enhanced observability for Amazon EKS

CloudWatch released a new version of Container Insights. This version supports enhanced observability for Amazon EKS clusters and can collect more detailed metrics from clusters running Amazon EKS. After installation, it automatically collects detailed infrastructure telemetry and container logs for your Amazon EKS clusters. You can then use curated, immediately usable dashboards to drill down into application and infrastructure telemetry.

November 6, 2023

CloudWatch metric streams adds quick partner setup

CloudWatch metric streams now provides a quick partner setup option, which you can use to quickly set up a metric stream to some third-party providers.

October 17, 2023

CloudWatch releases alarm recommendations

CloudWatch Synthetics now provides alarm recommendations for metrics from other AWS services. These recommendations can help you identify the metrics that you should set alarms for to follow best practices for monitoring these services.

October 16, 2023

CloudWatch Synthetics releases runtime syn-nodejs-puppeteer-6.0

CloudWatch Synthetics released runtime syn-nodejs-puppeteer-6.0.

September 26, 2023

Adds Amazon CloudWatch Application Insights support for cross-account applications

You can now share CloudWatch Application Insights applications across account boundaries.

September 26, 2023

New service-linked role and new IAM policy

CloudWatch added a new service-linked role, called AWSServiceRoleForCloudWatchMetrics_DbPerfInsights. CloudWatch added this new service-linked role to allow CloudWatch to fetch Performance Insights metrics for alarming, anomaly detection, and snapshotting. The new AWSServiceRoleForCloudWatchMetrics_DbPerfInsightsServiceRolePolicy IAM policy is attached to this role, and the policy grants permission to CloudWatch to fetch Performance Insights metrics on your behalf.

September 20, 2023

Adds new metric math function

CloudWatch added a new metric math function, DB_PERF_INSIGHTS, that you can use to fetch Performance Insights metrics from AWS database services for alarming, anomaly detection, and snapshotting.

September 20, 2023

CloudWatchReadOnlyAccess policy updated

CloudWatch added the application-autoscaling:DescribeScalingPolicies permission to CloudWatchReadOnlyAccess so that users with this policy can access information about Application Auto Scaling policies.

September 14, 2023

CloudWatch agent added support for AL2023

The CloudWatch agent supports AL2023.

August 8, 2023

New managed IAM policy, CloudWatchFullAccessV2

CloudWatch added a new policy CloudWatchFullAccessV2. This policy grants full access to CloudWatch actions and resources while better scoping the permissions granted to other services such as Amazon SNS and Amazon EC2 Auto Scaling.

August 1, 2023

Updated service linked role for Amazon CloudWatch Internet Monitor – update to an existing policy

Adds new permissions, elasticloadbalancing:DescribeLoadBalancers and ec2:DescribeNetworkInterfaces, to the service linked role for Internet Monitor, to support monitoring traffic for specific Network Load Balancer resources.

July 25, 2023

Added support for Network Load Balancer resources in Amazon CloudWatch Internet Monitor

Adds support for creating a monitor in Internet Monitor with specific Network Load Balancer resources, to provide more granular levels of observability for your application.

July 25, 2023

Dashboard variables feature

CloudWatch released dashboard variables, which you can use to create flexible dashboards that can quickly display different contents depending on how you set one input field within the dashboard. For example, you can create a dashboard that can quickly switch between different Lambda functions or Amazon EC2 instance IDs, or one that can switch to different AWS Regions. For more information, see Create flexible dashboards with dashboard variables.

June 28, 2023

Internet Monitor now supports customizing the threshold for health events

Internet Monitor added the ability to customize the threshold for when a global performance score or availability score triggers a heath event. For more information, see Tracking real-time performance and availability in Amazon CloudWatch Internet Monitor.

June 26, 2023

Internet Monitor now supports all commercial Regions

Internet Monitor added seven new AWS Regions and now supports all commercial Regions.

June 19, 2023

New Lambda Insights extension versions

CloudWatch added the 1.0.229.0 version of the Lambda Insights extension for both x86-64 platforms and ARM64 platforms. For more information, see Available versions of the Lambda Insights extension.

June 12, 2023

CloudWatchReadOnlyAccess policy updated

CloudWatch added permissions to CloudWatchReadOnlyAccess. The logs:StartLiveTail and logs:StopLiveTail permissions were added so that users with this policy can use the console to start and stop CloudWatch Logs live tail sessions. For more information, see Use live tail to view logs in near real time.

June 6, 2023

CloudWatch RUM adds support for custom metrics

You can use CloudWatch RUM app monitors to create custom metrics and send them to CloudWatch and CloudWatch Evidently. This feature includes an update to the AmazonCloudWatchRUMServiceRolePolicy managed IAM policy. In that policy, a condition key was changed so that CloudWatch RUM can send custom metrics to custom metric namespaces.

February 9, 2023

New and updated managed polices for CloudWatch

To support CloudWatch cross-account observability, the CloudWatchFullAccess and CloudWatchReadOnlyAccess policies have been updated, and the following new managed policies have been added: CloudWatchCrossAccountSharingConfiguration, OAMFullAccess, and OAMReadOnlyAccess. For more information, see CloudWatch updates to AWS managed policies.

February 7, 2023

CloudWatch Application Insights service-linked role policy updates — update to an existing policy.

CloudWatch Application Insights updated an existing AWS service-linked role policy.

December 19, 2022

Amazon CloudWatch Application Insights support for containerized applications and microservices from the Container Insights console.

You can display CloudWatch Application Insights detected problems for Amazon ECS and Amazon EKS on your Container Insights dashboard.

November 17, 2021

Amazon CloudWatch Application Insights monitoring for SAP HANA databases.

You can monitor SAP HANA databases with Application Insights.

November 15, 2021

Amazon CloudWatch Application Insights support for monitoring all resources in an account.

You can onboard and monitor all resources in an account.

September 15, 2021

Amazon CloudWatch Application Insights support for Amazon FSx.

You can monitor metrics retrieved from Amazon FSx.

August 31, 2021

SDK Metrics is no longer supported.

CloudWatch SDK Metrics is no longer supported.

August 25, 2021

Amazon CloudWatch Application Insights support for setting up container monitoring.

You can monitor containers using best practices with Amazon CloudWatch Application Insights.

May 18, 2021

Metric streams is generally available

You can use metric streams to continually stream CloudWatch metrics to a destination of your choice. For more information, see Metric streams in the Amazon CloudWatch User Guide.

March 31, 2021

Amazon CloudWatch Application Insights monitoring for Oracle databases on Amazon RDS and Amazon EC2.

You can monitor metrics and logs retrieved from Oracle with Amazon CloudWatch Application Insights.

January 16, 2021

Lambda Insights is generally available

CloudWatch Lambda Insights is a monitoring and troubleshooting solution for serverless applications running on AWS Lambda. For more information, see Using Lambda Insights in the Amazon CloudWatch User Guide.

December 3, 2020

Amazon CloudWatch Application Insights monitoring for Prometheus JMX exporter metrics.

You can monitor metrics retrieved from Prometheus JMX exporter with Amazon CloudWatch Application Insights.

November 20, 2020

CloudWatch Synthetics releases new runtime version

CloudWatch Synthetics has released a new runtime version. For more information, see Canary Runtime Versions in the Amazon CloudWatch User Guide.

September 11, 2020

Amazon CloudWatch Application Insights monitoring for Postgre SQL on Amazon RDS and Amazon EC2.

You can monitor applications built with PostgreSQL running on Amazon RDS or Amazon EC2.

September 11, 2020

CloudWatch supports dashboard sharing

You can now share CloudWatch dashboards with people outside of your organization and AWS account. For more information, see Sharing CloudWatch Dashboards in the Amazon CloudWatch User Guide.

September 10, 2020

Set up monitors for .NET applications using SQL Server on the backend with CloudWatch Application Insights

You can use the documentation tutorial to help you to set up monitors for .NET applications using SQL Server on the backend with CloudWatch Application Insights.

August 19, 2020

AWS CloudFormation support for Amazon CloudWatch Application Insights applications.

You can add CloudWatch Application Insights monitoring, including key metrics and telemetry, to your application, database, and web server, directly from AWS CloudFormation templates.

July 30, 2020

Amazon CloudWatch Application Insights monitoring for Aurora for MySQL database clusters.

You can monitor Aurora for MySQL database clusters (RDS Aurora) with Amazon CloudWatch Application Insights.

July 2, 2020

CloudWatch Contributor Insights general availability

CloudWatch Contributor Insights is now generally available. It enables you to analyze log data and create time series that display contributor data. You can see metrics about the top-N contributors, the total number of unique contributors, and their usage. For more information, see Using Contributor Insights to Analyze High-Cardinality Data in the Amazon CloudWatch User Guide.

April 2, 2020

CloudWatch Synthetics public preview

CloudWatch Synthetics is now in public preview. It enables you to create canaries to monitor your endpoints and APIs. For more information, see Using Canaries in the Amazon CloudWatch User Guide.

November 25, 2019

CloudWatch Contributor Insights public preview

CloudWatch Contributor Insights is now in public preview. It enables you to analyze log data and create time series that display contributor data. You can see metrics about the top-N contributors, the total number of unique contributors, and their usage. For more information, see Using Contributor Insights to Analyze High-Cardinality Data in the Amazon CloudWatch User Guide.

November 25, 2019

CloudWatch launches ServiceLens feature

ServiceLens ehances the observability of your services and applications by enabling you to integrate traces, metrics, logs, and alarms into one place. ServiceLens integrates CloudWatch with AWS X-Ray to provide an end-to-end view of your application.

November 21, 2019

Use CloudWatch to proactively manage your AWS service quotas

You can use CloudWatch to proactively manage your AWS service quotas. CloudWatch usage metrics provide visibility into your account's usage of resources and API operations. For more information, see Service Quotas Integration and Usage Metrics in the Amazon CloudWatch User Guide.

November 19, 2019

CloudWatch sends events when alarms change state

CloudWatch now sends an event to Amazon EventBridge when any CloudWatch alarm changes state. For more information, see Alarm Events and EventBridge in the Amazon CloudWatch User Guide.

October 8, 2019

Container Insights

CloudWatch Container Insights is now generally available. It enables you to collect, aggregate, and summarize metrics and logs from your containerized applications and microservices. For more information, see Using Container Insights in the Amazon CloudWatch User Guide.

August 30, 2019

Updates for Container Insights preview metrics on Amazon EKS and Kubernetes

The Container Insights on Amazon EKS and Kubernetes public preview has been updated. InstanceId is now included as a dimension to the cluster EC2 instances. This allows alarms that have been created on these metrics to trigger the following EC2 actions: Stop, Terminate, Reboot, or Recover. Additionally, pod and service metrics are now reported by Kubernetes namespace to simplify the monitoring and alarming on metrics by namespace.

August 19, 2019

Updates for AWS Systems Manager OpsCenter integration

Updates on how CloudWatch Application Insights integrates with Systems Manager OpsCenter.

August 7, 2019

CloudWatch usage metrics

CloudWatch usage metrics help you track the usage of your CloudWatch resources and stay within your service limits. For more information, see https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Usage-Metrics.html.

August 6, 2019

CloudWatch Container Insights public preview

CloudWatch Container Insights is now in public preview. It enables you to collect, aggregate, and summarize metrics and logs from your containerized applications and microservices. For more information, see Using Container Insights in the Amazon CloudWatch User Guide.

July 9, 2019

CloudWatch Anomaly Detection public preview

CloudWatch anomaly detection is now in public preview. CloudWatch applies machine-learning algorithms to a metric's past data to create a model of the metric's expected values. You can use this model for visualization and for setting alarms. For more information, see Using CloudWatch Anomaly Detection in the Amazon CloudWatch User Guide.

July 9, 2019

CloudWatch Application Insights for .NET and SQL Server

CloudWatch Application Insights for .NET and SQL Server facilitates observability for .NET and SQL Server applications. It can help you set up the best monitors for your application resources to continuously analyze data for signs of problems with your applications.

June 21, 2019

CloudWatch agent section re-organized

The CloudWatch agent documentation has been rewritten to improve clarity, especially for customers using the command line to install and configure the agent. For more information, see Collecting Metrics and Logs from Amazon EC2 Instances and On-Premises Servers with the CloudWatch Agent in the Amazon CloudWatch User Guide.

March 28, 2019

SEARCH function added to metric math expressions

You can now use a SEARCH function in metric math expressions. This enables you to create dashboards that update automatically as new resources are created that match the search query. For more information, see Using Search Expressions in Graphs in the Amazon CloudWatch User Guide.

March 21, 2019

AWS SDK Metrics for Enterprise Support

SDK Metrics helps you assess the health of your AWS services and diagnose latency caused by reaching your account usage limits or by a service outage. For more information, see Monitor Applications Using AWS SDK Metrics in the Amazon CloudWatch User Guide.

December 11, 2018

Alarms on math expressions

CloudWatch supports creating alarms based on metric math expressions. For more information, see Alarms on Math Expressions in the Amazon CloudWatch User Guide.

November 20, 2018

New CloudWatch console home page

Amazon has created a new home page in the CloudWatch console, which automatically displays key metrics and alarms for all the AWS services you are using. For more information, see Getting Started with Amazon CloudWatch in the Amazon CloudWatch User Guide.

November 19, 2018

AWS CloudFormation templates for the CloudWatch Agent

Amazon has uploaded AWS CloudFormation templates that you can use to install and update the CloudWatch agent. For more information, see Install the CloudWatch Agent on New Instances Using AWS CloudFormation in the Amazon CloudWatch User Guide.

November 9, 2018

Enhancements to the CloudWatch Agent

The CloudWatch agent has been updated to work with both the StatsD and collectd protocols. It also has improved cross-account support. For more information, see Retrieve Custom Metrics with StatsD, Retrieve Custom Metrics with collectd, and Sending Metrics and Logs to a Different AWS Account in the Amazon CloudWatch User Guide.

September 28, 2018

Support for Amazon VPC endpoints

You can now establish a private connection between your VPC and CloudWatch. For more information, see Using CloudWatch with Interface VPC Endpoints in the Amazon CloudWatch User Guide.

June 28, 2018

The following table describes important changes to the Amazon CloudWatch User Guide before June 2018.

Change Description Release date

Metric math

You can now perform math expressions on CloudWatch metrics, producing new time series that you can add to graphs on your dashboard. For more information, see Use metric math.

April 4, 2018

"M out of N" alarms

You can now configure an alarm to trigger based on "M out of N" datapoints in any alarm evaluation interval. For more information, see Evaluating an alarm.

December 8, 2017

CloudWatch agent

A new unified CloudWatch agent was released. You can use the unified multi-platform agent to collect custom both system metrics and log files from Amazon EC2 instances and on-premises servers. The new agent supports both Windows and Linux and enables customization of metrics collected, including sub-resource metrics such as per-CPU core. For more information, see Collect metrics, logs, and traces with the CloudWatch agent.

September 7, 2017

NAT gateway metrics

Added metrics for Amazon VPC NAT gateway.

September 7, 2017

High-resolution metrics

You can now optionally set up custom metrics as high-resolution metrics, with a granularity of as low as one second. For more information, see High-resolution metrics.

July 26, 2017

Dashboard APIs

You can now create, modify, and delete dashboards using APIs and the AWS CLI. For more information, see Creating a CloudWatch dashboard.

July 6, 2017

AWS Direct Connect metrics

Added metrics for AWS Direct Connect.

June 29, 2017

Amazon VPC VPN metrics

Added metrics for Amazon VPC VPN.

May 15, 2017

AppStream 2.0 metrics

Added metrics for AppStream 2.0.

March 8, 2017

CloudWatch console color picker

You can now choose the color for each metric on your dashboard widgets. For more information, see Edit a graph on a CloudWatch dashboard .

February 27, 2017

Alarms on dashboards

Alarms can now be added to dashboards. For more information, see Add or remove an alarm widget from a CloudWatch dashboard .

February 15, 2017

Added metrics for Amazon Polly

Added metrics for Amazon Polly.

December 1, 2016

Added metrics for Amazon Managed Service for Apache Flink

Added metrics for Amazon Managed Service for Apache Flink.

December 1, 2016

Added support for percentile statistics

You can specify any percentile, using up to two decimal places (for example, p95.45). For more information, see Percentiles.

November 17, 2016

Added metrics for Amazon Simple Email Service

Added metrics for Amazon Simple Email Service.

November 2, 2016

Updated metrics retention

Amazon CloudWatch now retains metrics data for 15 months instead of 14 days.

November 1, 2016

Updated metrics console interface

The CloudWatch console is updated with improvements to existing functionality and new functionality.

November 1, 2016

Added metrics for Amazon Elastic Transcoder

Added metrics for Amazon Elastic Transcoder.

September 20, 2016

Added metrics for Amazon API Gateway

Added metrics for Amazon API Gateway.

September 9, 2016

Added metrics for AWS Key Management Service

Added metrics for AWS Key Management Service.

September 9, 2016

Added metrics for the new Application Load Balancers supported by Elastic Load Balancing

Added metrics for Application Load Balancers.

August 11, 2016

Added new NetworkPacketsIn and NetworkPacketsOut metrics for Amazon EC2

Added new NetworkPacketsIn and NetworkPacketsOut metrics for Amazon EC2.

March 23, 2016

Added new metrics for Amazon EC2 Spot fleet

Added new metrics for Amazon EC2 Spot fleet.

March 21, 2016

Added new CloudWatch Logs metrics

Added new CloudWatch Logs metrics.

March 10, 2016

Added Amazon OpenSearch Service and AWS WAF metrics and dimensions

Added Amazon OpenSearch Service and AWS WAF metrics and dimensions.

October 14, 2015

Added support for CloudWatch dashboards

Dashboards are customizable home pages in the CloudWatch console that you can use to monitor your resources in a single view, even those that are spread out across different Regions. For more information, see Using Amazon CloudWatch dashboards.

October 8, 2015

Added AWS Lambda metrics and dimensions

Added AWS Lambda metrics and dimensions.

September 4, 2015

Added Amazon Elastic Container Service metrics and dimensions

Added Amazon Elastic Container Service metrics and dimensions.

August 17, 2015

Added Amazon Simple Storage Service metrics and dimensions

Added Amazon Simple Storage Service metrics and dimensions.

July 26, 2015

New feature: Reboot alarm action

Added the reboot alarm action and new IAM role for use with alarm actions. For more information, see Create alarms to stop, terminate, reboot, or recover an EC2 instance.

July 23, 2015

Added Amazon WorkSpaces metrics and dimensions

Added Amazon WorkSpaces metrics and dimensions.

April 30, 2015

Added Amazon Machine Learning metrics and dimensions

Added Amazon Machine Learning metrics and dimensions.

April 9, 2015

New feature: Amazon EC2 instance recovery alarm actions

Updated alarm actions to include new EC2 instance recovery action. For more information, see Create alarms to stop, terminate, reboot, or recover an EC2 instance.

March 12, 2015

Added Amazon CloudFront and Amazon CloudSearch metrics and dimensions

Added Amazon CloudFront and Amazon CloudSearch metrics and dimensions.

March 6, 2015

Added Amazon Simple Workflow Service metrics and dimensions

Added Amazon Simple Workflow Service metrics and dimensions.

May 9, 2014

Updated guide to add support for AWS CloudTrail

Added a new topic to explain how you can use AWS CloudTrail to log activity in Amazon CloudWatch. For more information, see Logging Amazon CloudWatch API calls with AWS CloudTrail.

April 30, 2014

Updated guide to use the new AWS Command Line Interface (AWS CLI)

The AWS CLI is a cross-service CLI with a simplified installation, unified configuration, and consistent command line syntax. The AWS CLI is supported on Linux/Unix, Windows, and Mac. The CLI examples in this guide have been updated to use the new AWS CLI.

For information about how to install and configure the new AWS CLI, see Getting Set Up with the AWS CLI Interface in the AWS Command Line Interface User Guide.

February 21, 2014

Added Amazon Redshift and AWS OpsWorks metrics and dimensions

Added Amazon Redshift and AWS OpsWorks metrics and dimensions.

July 16, 2013

Added Amazon Route 53 metrics and dimensions

Added Amazon Route 53 metrics and dimensions.

June 26, 2013

New feature: Amazon CloudWatch Alarm Actions

Added a new section to document Amazon CloudWatch alarm actions, which you can use to stop or terminate an Amazon Elastic Compute Cloud instance. For more information, see Create alarms to stop, terminate, reboot, or recover an EC2 instance.

January 8, 2013

Updated EBS metrics

Updated the EBS metrics to include two new metrics for Provisioned IOPS volumes.

November 20, 2012

New billing alerts

You can now monitor your AWS charges using Amazon CloudWatch metrics and create alarms to notify you when you have exceeded the specified threshold. For more information, see Create a billing alarm to monitor your estimated AWS charges.

May 10, 2012

New metrics

You can now access six new Elastic Load Balancing metrics that provide counts of various HTTP response codes.

October 19, 2011

New feature

You can now access metrics from Amazon EMR.

June 30, 2011

New feature

You can now access metrics from Amazon Simple Notification Service and Amazon Simple Queue Service.

July 14, 2011

New Feature

Added information about using the PutMetricData API to publish custom metrics. For more information, see Publish custom metrics.

May 10, 2011

Updated metrics retention

Amazon CloudWatch now retains the history of an alarm for two weeks rather than six weeks. With this change, the retention period for alarms matches the retention period for metrics data.

April 7, 2011

New feature

Added ability to send Amazon Simple Notification Service or Auto Scaling notifications when a metric has crossed a threshold. For more information, see Alarms.

December 2, 2010

New feature

A number of CloudWatch actions now include the MaxRecords and NextToken parameters, which enable you to control pages of results to display.

December 2, 2010

New feature

This service now integrates with AWS Identity and Access Management (IAM).

December 2, 2010