The script enables or disables Microsoft 365 (Office 365) services for a user based on an attribute of the user's AD account. This can be used to specify which services exactly need to be enabled for each user.
The script assigns Microsoft 365 (Office 365) licenses based on their availability. For example, you can try assigning the Enterprise E5 license, and if there are no available E5 licenses, assign an Enterprise E3 one.
Example: if a Microsoft 365 (Office 365) tenant has only the Exchange Online and Sharepoint Online services enabled in the Enterprise E3 license plan, a user will have only these services enabled in the license after running script on them.