You no longer need to be concerned about Autopilot support when you are Entra-join only. Windows 11 22H2 devices that are Entra joined only are supported for web sign-in.

Since Microsoft is currently offering a limited public preview, those only interested in backups will need to have Entra- or hybrid Entra-joined devices on Windows 10 or Windows 11.

I am not too familiar with MFA for Microsoft Entra Join. Easy enough to add a PC in such a way to office365 but I don't understand why for the first time login it has to ask for phone number for ...

Microsoft's Sept. 2023 update to Windows 11 version 22H2 also ushered in the ability for Entra ID-joined devices to use a "Web sign-in" feature, as explained in this document.

The software-as-a-service solution has been built for simplicity and speed, with no installation, configuration, or manual ...

Windows 11 22H2 or newer, Microsoft Entra-joined devices, an active Microsoft Intune test tenant and Microsoft Intune service administrator rights are required for the full range of functions.