# Document revisions
Document revisionsNew lens version

Updated all best practices across the entire lens with new structure and guidance. Updated formatting to be consistent with other Well-Architected lenses.Major update

Whitepaper updated to reflect current best practices, implementation guidance, and AWS services.

 Added the sustainability pillar that describes reducing your impact on the environment while taking advantage of AWS advanced AI/ML capabilities for your business. 

 Updated technical references and resources including product documentation, blog posts, instructional and video links, and solution briefs. Minor update

Fixed broken links.Minor update

Corrected typo.Major update

Whitepaper updated to reflect current best practices and AWS services.Minor changes

Updated links in the whitepaper.Initial publication

Machine Learning Lens first published.

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| Change | Description | Date | 
| --- |--- |--- |
| [New lens version](#document-revisions) | Updated all best practices across the entire lens with new structure and guidance. Updated formatting to be consistent with other Well-Architected lenses. | November 19, 2025 | 
| [Major update](#document-revisions) | Whitepaper updated to reflect current best practices, implementation guidance, and AWS services. Added the sustainability pillar that describes reducing your impact on the environment while taking advantage of AWS advanced AI/ML capabilities for your business.  Updated technical references and resources including product documentation, blog posts, instructional and video links, and solution briefs.  | July 5, 2023 | 
| [Minor update](#document-revisions) | Fixed broken links. | April 6, 2023 | 
| [Minor update](#document-revisions) | Corrected typo. | July 21, 2022 | 
| [Major update](#document-revisions) | Whitepaper updated to reflect current best practices and AWS services. | October 12, 2021 | 
| [Minor changes](#document-revisions) | Updated links in the whitepaper. | January 21, 2021 | 
| [Initial publication](#document-revisions) | Machine Learning Lens first published. | April 16, 2020 | 

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