Can I use Microsoft 365 on multiple devices?
Yes. Microsoft 365 is licensed per user, not per device. If your plan includes Microsoft 365 apps, one licensed user can sign in and work across several computers, tablets, and phones using the same business account.
For plans that include desktop apps, Microsoft allows each user to install Office on up to five desktop computers, five tablets, and five mobile devices. This lets employees move between a work laptop, home computer, tablet, and phone without needing a separate licence for each device.
The limit applies to each licensed user, not to the whole company subscription. In practice, this works best when the same employee signs in on their own devices rather than when one account is shared across multiple people.