Amazon CloudWatch collects metrics, logs, and events from AWS resources and on-premises systems. You can set alarms, create dashboards, and use logs to troubleshoot performance issues. Together with CloudWatch Events (or EventBridge), you can trigger automated responses when events occur.
You can use AWS CloudFormation or AWS OpsWorks. CloudFormation lets you define infrastructure as code (IaC) in JSON or YAML templates, so you can provision EC2, networking, IAM roles, and other resources consistently, repeatedly, and safely.
Use CloudTrail for who-did-what auditing and Config for what-changed and is it compliant tracking.
Use AWS Trusted Advisor or Compute Optimizer to get recommendations on underutilized instances. You can review CloudWatch metrics (CPU, network, disk) and downsize or stop idle instances. Rightsizing reduces costs without hurting performance.
Amazon CloudWatch Alarms let you watch metrics (e.g., CPUUtilization) and take actions (like scaling, stopping instances, or sending notifications via SNS) when thresholds are crossed.
Use AWS Secrets Manager or Systems Manager Parameter Store. These services encrypt secrets at rest, rotate them automatically (Secrets Manager supports rotation with Lambda), and enforce access control through IAM policies.
Create an Auto Scaling group with a launch template or configuration. Define scaling policies (target tracking, step scaling, or scheduled scaling) based on CloudWatch metrics. This ensures the correct number of instances run to handle load while minimizing costs during low demand.
Check:
These tools and checks help pinpoint misconfigurations blocking connectivity.