# Extension SDK Developer Guide for Amazon WorkSpaces Applications
<a name="extension-sdk"></a>

Amazon WorkSpaces Applications uses Amazon DCV technology to provide secure, high-performance access to your applications. With the Amazon DCV Extension SDK, developers can customize WorkSpaces Applications experiences for end users, including the following actions:
+ Facilitate custom hardware support.
+ Enhance the usability of third-party applications in remote sessions. For example, you can add local audio termination for VoIP applications or local video playback for conferencing applications.
+ Provide accessibility software such as screen readers with information about the remote session and applications running remotely.
+ Allow security software to analyze the security posture of the local endpoint to allow conditional access policies.
+ Perform arbitrary data transfers over an established remote session.

To get started with the Amazon DCV Extension SDK, see [What is the Amazon DCV Extension SDK?](https://docs.aws.amazon.com/dcv/latest/extsdkguide/what-is.html). The SDK itself can be found in the [Amazon DCV Extension SDK Github repository](https://github.com/aws-samples/dcv-extension-sdk). In addition, integration examples of the SDK can be found in the [Amazon DCV Extension SDK Samples Github repository](https://github.com/aws-samples/dcv-extension-sdk-samples).

**Topics**
+ [

# Extension SDK Prerequisites for Amazon WorkSpaces Applications
](extension-sdk-prereq.md)
+ [

# Third-party vendor extensions for Amazon WorkSpaces Applications
](extension-sdk-isv.md)

# Extension SDK Prerequisites for Amazon WorkSpaces Applications
<a name="extension-sdk-prereq"></a>

Before you start working with the Amazon DCV Extension SDK, make sure that your WorkSpaces Applications client applications and your WorkSpaces Applications servers meet the following requirements.

Supported WorkSpaces Applications clients: 
+ WorkSpaces Applications Windows client version 1.1.1154 or above 
**Note**  
WorkSpaces Applications web access doesn't support the Amazon DCV Extension SDK.

Supported WorkSpaces Applications streaming instances: 
+ Windows Server 2016, 2019, 2022, and 2025
+ WorkSpaces Applications agent version for Windows releaed on May 8, 2023 or later
+ Managed WorkSpaces Applications image updates released on May 8, 2023 or later

# Third-party vendor extensions for Amazon WorkSpaces Applications
<a name="extension-sdk-isv"></a>

AWS supports the Amazon DCV Extension SDK API within the WorkSpaces Applications host and client processes. However, please note that extensions developed by third-party Independent Software Vendors (ISVs) are not developed or maintained by AWS. Therefore, support for the extensions themselves, including their installation, configuration, troubleshooting, and updates, is the responsibility of the third-party vendor who developed the extension. If you have any issues or questions related to third-party extensions, please contact the relevant third-party vendor for support.