Amazon EventBridge now supports Customer Managed Keys (CMK) in API destinations connections

Amazon EventBridge announces support for Amazon Key Management Service (KMS) Customer Managed Keys (CMK) in API destinations connections. This enhancement enables you to encrypt your HTTPS endpoint authentication credentials managed by API destinations with your own keys instead of an AWS owned key (which is used by default). With CMK support, you now have more granular security control over your authentication credentials used in API destinations, helping you meet your organization's security requirements and governance policies.

Customer managed Keys (CMK) are KMS keys that you create and manage by yourself. You can also audit and track usage of your keys via CloudTrail. EventBridge API destinations are private and public HTTPS endpoints that you can invoke as the target of an event bus rule or pipe, similar to how you invoke an AWS service or resource as a target. API destinations provides flexible authentication options for HTTPS endpoints, such as API key and OAuth, storing and managing credentials securely in AWS Secrets Manager on your behalf.

CMK support for EventBridge API destinations connections is now available across all AWS Regions where EventBridge API destinations is available. Please refer to the EventBridge user guide and KMS documentation for details.