@Kunal Saurabh, Thanks for posting in Q&A.
For In-Place Upgrade, the document says it keeps the applications, settings, and user data on the computer, but not the last 90 days on each device that been accessed.
https://zcusa.951200.xyz/en-us/mem/configmgr/osd/deploy-use/upgrade-windows-to-the-latest-version
For OneDrive for Business, you cannot upgrade Windows 10 to Windows 11 using it, because it is like your friendly neighborhood superhero but for data! It’s a cloud storage solution that not only securely stores your important files and documents but also allows you to access them from anywhere, anytime.
https://sharegate.com/blog/what-is-onedrive-for-business-and-what-does-it-do#h-what-exactly-is-microsoft-onedrive-for-business
Non-official, just for reference.
For User State Migration Tool, the User State Migration Tool (USMT) can be used to streamline and simplify user state migration during large deployments of Windows operating systems. USMT captures user accounts, user files, operating system settings, and application settings, and then migrates them to a new Windows installation. Safely migrates user accounts, operating system and application settings.
https://zcusa.951200.xyz/en-us/windows/deployment/usmt/usmt-overview
For Windows Autopilot, although you cannot directly upgrade windows 10 to windows 11 using it, you can try re-image them and then do autopilot, or when the devices done autopilot, you can either allow Windows 11 upgrades on your update rings or create a specific feature update policy to upgrade endpoints to Windows 11.
https://www.reddit.com/r/Intune/comments/14ykktl/windows_10_to_11_via_preprovision_autopilot/
https://community.spiceworks.com/t/upgrade-to-windows-11-via-autopilot/952108
Non-official, just for reference.
https://zcusa.951200.xyz/en-us/autopilot/existing-devices
Hope above information can help you.
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