Office 365 plans are suitable for businesses that have less than 300 users. There are three business plans: Office 365 Business Essentials, Office 365 Business, Office 365 Business Premium. They have been now renamed as Microsoft 365 Business Basic, Microsoft 365 Apps for business, and Microsoft 365 Business Standard respectively.
If you don’t need Microsoft Office applications, go with the most basic plan – Office 365 Business Essentials (now called as Microsoft 365 Business Basic). This plan is priced at only $5 user/month. At $8.25 user/month, Office 365 Business (now called as Microsoft 365 Apps for business) is a standard plan includes Microsoft Office applications along with OneDrive for Business.
I hope this information will be helpful!