# Document revisions
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| Change | Description | Date | 
| --- |--- |--- |
| [Major update](#document-revisions) | Best practices have been added across the entire whitepaper. Many sections have been updated with new prescriptive guidance. | July 2, 2025 | 
| [Major update](#document-revisions) | Updated to include Lens Checklist, industrial IoT (IIoT), and new AWS IoT services and features. | March 31, 2023 | 
| [Minor update](#document-revisions) | Updated link. | March 10, 2021 | 
| [Whitepaper updated](#document-revisions) | Updated to include additional guidance on IoT SDK usage, bootstrapping, device lifecycle management, and IoT | December 23, 2019 | 
| [Initial publication](#document-revisions) | IoT Lens first published. | November 1, 2018 |