Amazon CloudWatch

Observability of your AWS resources and applications on AWS and on-premises

Amazon CloudWatch is a monitoring and observability service built for DevOps engineers, developers, site reliability engineers (SREs), and IT managers. CloudWatch provides you with data and actionable insights to monitor your applications, respond to system-wide performance changes, optimize resource utilization, and get a unified view of operational health. CloudWatch collects monitoring and operational data in the form of logs, metrics, and events, providing you with a unified view of AWS resources, applications, and services that run on AWS and on-premises servers. You can use CloudWatch to detect anomalous behavior in your environments, set alarms, visualize logs and metrics side by side, take automated actions, troubleshoot issues, and discover insights to keep your applications
running smoothly.

10 custom metrics and alarms free

with the AWS Free Tier


Observability on a single platform across applications and infrastructure

Modern applications such as those running on microservices architectures generate large volumes of data in the form of metrics, logs, and events. Amazon CloudWatch enables you to collect, access, and correlate this data on a single platform from across all your AWS resources, applications, and services that run on AWS and on-premises servers, helping you break down data silos so you can easily gain system-wide visibility and quickly resolve issues.

Easiest way to collect metrics in AWS and on-premises

Monitoring your AWS resources and applications is easy with CloudWatch. It natively integrates with more than 70 AWS services such as Amazon EC2, Amazon DynamoDB, Amazon S3, Amazon ECS, Amazon EKS, and AWS Lambda, and automatically publishes detailed 1-minute metrics and custom metrics with up to 1-second granularity so you can dive deep into your logs for additional context. You can also use CloudWatch in hybrid cloud architectures by using the CloudWatch Agent or API to monitor your on-premises resources.

Improve operational performance and resource optimization

Amazon CloudWatch enables you to set alarms and automate actions based on either predefined thresholds, or on machine learning algorithms that identify anomalous behavior in your metrics. For example, it can start Amazon EC2 Auto Scaling automatically, or stop an instance to reduce billing overages. You can also use CloudWatch Events for serverless to trigger workflows with services like AWS Lambda, Amazon SNS, and AWS CloudFormation.

Get operational visibility and insight

To optimize performance and resource utilization, you need a unified operational view, real-time granular data, and historical reference. CloudWatch provides automatic dashboards, data with 1-second granularity, and up to 15 months of metrics storage and retention. You can also perform metric math on your data to derive operational and utilization insights; for example, you can aggregate usage across an entire fleet of EC2 instances.

Derive actionable insights from logs

CloudWatch enables you to explore, analyze, and visualize your logs so you can troubleshoot operational problems with ease. With CloudWatch Logs Insights, you only pay for the queries you run. It scales with your log volume and query complexity giving you answers in seconds. In addition, you can publish log-based metrics, create alarms, and correlate logs and metrics together in CloudWatch Dashboards for complete operational visibility.

How it works

CloudWatch collects monitoring and operational data in the form of logs, metrics, and events, and visualizes it using automated dashboards so you can get a unified view of your AWS resources, applications, and services that run in AWS and on-premises. You can correlate your metrics and logs to better understand the health and performance of your resources. You can also create alarms based on metric value thresholds you specify, or that can watch for anomalous metric behavior based on machine learning algorithms. To take action quickly, you can set up automated actions to notify you if an alarm is triggered and automatically start auto scaling, for example, to help reduce mean-time-to-resolution. You can also dive deep and analyze your metrics, logs, and traces, to better understand how to improve application performance.

How Amazon CloudWatch works

Use cases

Infrastructure monitoring and troubleshooting

Monitor key metrics and logs, visualize your application and infrastructure stack, create alarms, and correlate metrics and logs to understand and resolve root cause of performance issues in your AWS resources. This includes monitoring your container ecosystem across Amazon ECS, AWS Fargate, Amazon EKS, and Kubernetes.

Mean-time-to-resolution improvement

CloudWatch helps you correlate, visualize, and analyze metrics and logs, so you can act quickly to resolve issues, and combine them with trace data from AWS X-Ray for end-to-end observability. You can also analyze user requests to help speed up troubleshooting and debugging, and reduce overall mean-time-to-resolution (MTTR).

Proactive resource optimization

CloudWatch alarms watch your metric values against thresholds that either you specify, or that CloudWatch creates for you using machine learning models to detect anomalous behavior. If an alarm is triggered, CloudWatch can take action automatically to enable Amazon EC2 Auto Scaling or stop an instance, for example, so you can automate capacity and resource planning.

Application monitoring

Monitor your applications that run on AWS (on Amazon EC2, containers, and serverless) or on-premises. CloudWatch collects data at every layer of the performance stack, including metrics and logs on automatic dashboards.

Log analytics

Explore, analyze, and visualize your logs to address operational issues and improve applications performance. You can perform queries to help you quickly and effectively respond to operational issues. If an issue occurs, you can start querying immediately using a purpose-built query language to rapidly identify potential causes.

“We use a microservices-based architecture. Amazon CloudWatch was an instant solution as it required no infrastructure setup or maintenance. CloudWatch has no issues handling our scale and removed the operational burden of integrating and managing multiple tools. The most important benefit for us is the decrease in MTTR (mean time to repair), as our DevOps team can quickly find issues across our container infrastructure.”

- Vitaliy Geraymovych, Co-founder and Vice President, Engineering, CloudPassage


Customers use Amazon CloudWatch to improve operational performance, optimize resource allocation, and reduce MTTR. To learn more about how organizations use Amazon CloudWatch, visit our customers page.  


Mapbox uses Amazon CloudWatch to ingest multiple data sources and monitor key workloads.

Read customer reference >>


Pushpay uses Amazon CloudWatch Logs Insights to query logs and reduce operational complexity.

Read customer reference >>


Rackspace uses Amazon CloudWatch Agent to monitor their virtual machines. 

Read customer reference >>


SendGrid uses Amazon CloudWatch natively without needing a self-managed stack or third-party vendor. 

Read customer reference >>


CloudPassage uses Amazon CloudWatch for its microservices-based architecture to reduce mean time to repair. 

Read customer reference >>


ConnectWise uses Amazon CloudWatch to monitor containers, latency, web server requests, and incoming load-balancer requests. 

Read customer reference >>

Latest blog posts


There are no Amazon CloudWatch blogs available at this time, please visit the AWS Blog page.

New - Amazon CloudWatch Logs Insights - Fast, Interactive Log Analytics
by Jeff Bar
Nov 27, 2018
How to better monitor your custom application metrics using Amazon CloudWatch Agent
by Helen Lin
Oct 15, 2018

Building an Amazon CloudWatch dashboard outside of the AWS Management Console
by Stephen McCurry
Oct 2, 2018

Read more »

Building serverless pipelines with Amazon CloudWatch Events
by Forrest Brazeal
May 02, 2019

Read more »

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