# AWS SigV4 and SigV4a request signing now supported

The Aembit Credential Provider for AWS Security Token Service (STS) now supports the AWS SigV4 and SigV4a request signing protocols. Aembit automatically signs requests to AWS services using SigV4 for regional services or SigV4a for global/multi-region services.

See [How Aembit uses AWS SigV4 and SigV4a](/user-guide/access-policies/credential-providers/aws-sigv4) to learn more and [AWS Security Token Service (STS) Federation](/user-guide/access-policies/credential-providers/aws-security-token-service-federation) to configure an AWS STS Credential Provider.

Updated Edge Components:

* Agent Proxy

Updated Edge Packages:

* Helm Chart

* VM Agent Proxy package

* Terraform ECS module

* AWS Lambda Extension

See [Edge Components supported versions](/reference/edge-components/edge-component-supported-versions).