Monitoring — Seeing What's Happening

Visibility into your infrastructure is essential for operations and optimization.

Amazon CloudWatch:

Monitoring and observability service

Collects metrics from all AWS services (CPU, memory, network)

Create custom metrics; set alarms; create dashboards

CloudWatch Logs — collect and store log data

CloudWatch Events/EventBridge — react to AWS service events

AWS CloudTrail:

Logs all API calls in your account

Who made the call, when, from what IP, what they did

Enabled by default; stored 90 days; extend with S3

Essential for security auditing and compliance

AWS Trusted Advisor:

Analyzes your account and recommends improvements in 5 areas: Cost Optimization, Performance, Security, Fault Tolerance, Service Limits

Basic plan: 7 core security and service limit checks

Business/Enterprise plans: full checks

AWS Systems Manager:

Operational hub for AWS; manage and automate operations tasks

Parameter Store — secure storage for configuration and secrets

Session Manager — secure shell access to EC2 without opening port 22

AWS Personal Health Dashboard: Personalized alerts about AWS events affecting your specific resources.

Reference:

Wikipedia: AWS

https://en.wikipedia.org/wiki/Amazon_Web_Services