# AWS CloudHSM Client SDK 5 supported platforms
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Base support is different for each version of the AWS CloudHSM Client SDK. Platform support for components in an SDK typically matches base support, but not always. To determine platform support for a given component, first make sure the platform you want appears in the base section for the SDK, then check for any exclusions or any other pertinent information in the component section.

AWS CloudHSM supports only 64-bit operating systems.

Platform support changes over time. Earlier versions of the CloudHSM Client SDK may not support all the operating systems listed here. Use release notes to determine the operating system support for previous versions of the CloudHSM Client SDK. For more information, see [Downloads for AWS CloudHSM Client SDK](client-history.md).

For supported platforms for the previous Client SDK, see [AWS CloudHSM Client SDK 3 supported platforms](sdk3-support.md)

Client SDK 5 does not require a client daemon.

**Topics**
+ [Linux support for Client SDK 5](sdk8-linux.md)
+ [Windows support for Client SDK 5](sdk8-windows.md)
+ [Serverless support for Client SDK 5](sdk8-serverless.md)
+ [HSM compatibility for Client SDK 5](sdk5-hsm-types.md)