# Document revisions
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| Change | Description | Date | 
| --- |--- |--- |
| [Major update](#document-revisions) | Updates throughout for new features and evolution of best practices. | July 14, 2022 | 
| [Minor update](#document-revisions) | Updated links. | March 10, 2021 | 
| [Minor update](#document-revisions) | Fixed formatting issue in HTML and minor editorial changes. | March 1, 2021 | 
| [Minor update](#document-revisions) | Fixed missing figure in HTML and minor editorial changes. | July 15, 2020 | 
| [Whitepaper updated](#document-revisions) | Updates throughout for new features and evolution of best practice. | December 19, 2019 | 
| [Whitepaper updated](#document-revisions) | New scenarios for Alexa and Mobile, and updates throughout to reflect new features and evolution of best practice. | November 1, 2018 | 
| [Initial publication](#document-revisions) | Serverless Applications Lens first published. | November 1, 2017 |