Lesson 21 / 28
CloudWatch: Metrics & Logs
Monitor AWS resources with CloudWatch metrics and logs to see CPU, latency and application output.
Metrics
CloudWatch metrics are numeric time-series data — CPU usage, request count, latency — automatically collected from most AWS services, viewable as graphs.
Logs
CloudWatch Logs collects text output from your applications (Lambda, EC2, ECS) into a central, searchable place — instead of SSHing into every server to read a file.
The car dashboard
Metrics are like a car's dashboard gauges — speed, fuel, temperature at a glance. Logs are the trip's black box — the detailed record you dig into after something goes wrong.