Just as complicated as the product offerings under the Microsoft Suite of products were, which has now been culminated under the Microsoft 365 banner, so was the multitude of domains and subdomains that represented these
This is all about to change according to Microsoft.

This month Microsoft announced it will be moving all application to a single domain structure – cloud.microsoft.
This means that each app will represent itself as a subset of this domain i.e. outlook.cloud.microsoft, teams.cloud.microsoft, word.cloud.microsoft etc.
With so many applications and urls, Microsoft states the transition of its complete Microsoft 365 suite will be down at a “slower pace”