Triggering Lambda for Auto-Remediation
See how a function isolates or fixes a resource on its own.
Lambda as the Responder
AWS Lambda runs your code without managing servers, charging only for execution time. In security automation, it is the most flexible remediation target.
When EventBridge matches a finding, it invokes a Lambda function that performs the fix — isolating an instance, revoking a key, or closing a bucket — in seconds.
The Remediation Flow
The pattern is consistent: a detector emits a finding, an EventBridge rule matches it, and the rule invokes a Lambda function passing the event as input.
The function reads the event detail, identifies the affected resource, and calls AWS APIs to remediate. Detection becomes correction with no human in the loop.
All lessons in this course
- How EventBridge Routes Security Events
- Matching Findings with Event Patterns
- Triggering Lambda for Auto-Remediation
- Orchestrating Responses with Step Functions