Simple Notification Service (SNS)
Kinesis + MQ
Databases & Analytics
CloudWatch Events

CloudWatch Events

  • CloudWatch Events delivers a near real-time stream of system events that describe changes in AWS resources.
  • Using simple rules that you can quickly set up, you can match events and route them to one or more target functions or streams.
  • CloudWatch Events responds to these operational changes and takes corrective action as necessary, by sending messages to respond to the environment, activating functions, making changes, and capturing state information.
  • CloudWatch Alarms just notifies you of a metric breaching the specified threshold, like if the CPU Usage goes above 50%, then do an SNS notification to the owner.
    • Whereas with CloudWatch Alarms, it actually trigger an action something based on a condition, like an Lambda function is triggered when a root user logs in or take an EBS snapshot every hour.
  • Note: CloudWatch Events and EventBridge are the same underlying service and API.
    • But EventBridge provides more features.
Copy link