# Document revisions
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| Change | Description | Date | 
| --- |--- |--- |
| [Minor update](#document-revisions) | Updated content for AD Directory Services, Disaster Recovery / Business Continuity & Cross Region Redirection. Added WorkSpaces & Connect Customer Audio Optimization. Minor updates to formatting. | May 26, 2022 | 
| [Minor update](#document-revisions) | Fix non-inclusive language. | April 6, 2022 | 
| [Whitepaper updated](#document-revisions) | Updated content | March 24, 2022 | 
| [Whitepaper updated](#document-revisions) | Updated content for AWS Network Firewall, MAD Replicated directories, YubiKey Support, Containers, WSLv1, Smart Card Support, WorkSpaces Service Quota, and Trusted Devices. | December 20, 2021 | 
| [Whitepaper updated](#document-revisions) | Updated content for WorkSpaces Streaming Protocol, smart card authentication, diagrams, client deployments, end device selection, and web access | April 28, 2021 | 
| [Whitepaper updated](#document-revisions) | Updated content | December 1, 2020 | 
| [Whitepaper updated](#document-revisions) | Updated content since first publication and added new diagrams. | May 1, 2020 | 
| [Initial publication](#document-revisions) | First published. | July 1, 2016 |