description AWS CloudWatch Overview
For organizations deeply embedded in the Amazon Web Services ecosystem, CloudWatch is the native, most integrated monitoring tool. It provides seamless metric collection for EC2, Lambda, RDS, and more. While it lacks the cross-platform visibility of dedicated SaaS tools, its integration depth within AWS services is unmatched, making it the default choice for AWS-first deployments.
help AWS CloudWatch FAQ
How does AWS CloudWatch receive Lambda metrics?
AWS Lambda automatically sends invocation metrics to CloudWatch when a function processes an event, including metrics such as Invocations and Errors. Lambda can also write application logs to CloudWatch Logs when the execution role permits it.
Can CloudWatch search application logs, or does it only draw graphs?
CloudWatch Logs Insights lets you query log groups with a query language, while metric filters can turn matching log events into metrics. This lets an EC2, Lambda, or RDS team connect an error string to an alarm or dashboard.
Can CloudWatch monitor services outside AWS?
Yes, but external monitoring usually needs the CloudWatch agent, an API integration, OpenTelemetry, or a partner exporter rather than automatic native metrics. CloudWatch is deepest for AWS services such as EC2, Lambda, and RDS, so a multi-cloud team may need another observability layer.
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