Office 0365 Plans
| Office 365 service family | Plans |
| Business maximum 300 users |
Office 365 essentials |
| Enterprise unlimited number of users |
Office 365 entrprise E1 |
| Education unlimited number of users |
Office 365 education E1 |
| Government unlimited number of users |
Office 365 government E1 |
source: https://technet.microsoft.com/en-us/office/dn788955.aspx