The following shows the comparison chart between products of Microsoft 365 and Office 365. Microsoft 365 is provided as a (Small) Business Plans (limiting to only 300 users maximum), while Office 365 is provisioned under Enterprise Plans.

ServiceMicrosoft 365 AppsMicrosoft 365 Business BasicMicrosoft 365 Business StandardMicrosoft 365 Business PremiumOffice 365 E1Microsoft 365 E3/Office 365 E3Microsoft 365 E5/Office 365 E5Microsoft 365 F3/Office 365 F3Microsoft 365 F1
Office 365 platformNo Yes Yes Yes Yes Yes Yes Yes Yes
Exchange OnlineNo Yes (P1)Yes (P1)Yes (P1)Yes (P1) Yes (P2)Yes (P2) Yes (K) No
SharePoint OnlineNo Yes Yes Yes Yes Yes Yes Yes Yes
OneDriveYes Yes Yes Yes Yes Yes Yes Yes (2GB)Yes (2GB)
Microsoft 365 Apps for the webYes Yes Yes Yes Yes Yes Yes Yes No
Microsoft 365 desktop client appsYes No Yes Yes No Yes Yes No No
Microsoft TeamsNo Yes Yes Yes Yes Yes Yes Yes Yes
ProjectNo No No No No No No No No
Power BINo No No No No No Yes No No
Viva EngageNo Yes YesYes Yes YesYes YesYes
Azure Information ProtectionNo NoNo Yes No Yes Yes No No
Microsoft KaizalaNoYesYesYesYesYesYesYesNo
(P1)=Exchange Online Plan 1 (P2)=Exchange Online Plan 2 (K)=Exchange Online Kiosk License (2GB)=2GB OneDrive Space instead of 1TB

From the chart above, difference between Office 365 E3 Plan and Microsoft 365 Business Standard is the former comes with Exchange Online Plan 2 (100GB mailbox size, Plan 2’s DLP) and Azure Information Protection.

Azure Information Protection will enable the supported Information Rights Management (IRM) features.

So which license should I choose?
If you already have users with existing Microsoft Office licenses and require only mailbox space, then use Exchange Online. If your users require additional features like OneDrive for Business (1TB), Teams, and Sharepoint Online, then Office 365 E1 (if above 300 users) or Microsoft 365 Business Basic (no desktop apps) is the minimum required.
Some business owners may feel that paying $600 for Office 2019/2021 perpetual license for a single install is not as cost-effective as the subscription-modeled Office 365 which can be upgraded to newer versions when available while perpetual licenses are tied to the version purchased and not entitled to version upgrades.

We are able to provide the licenses for all of the above O365 products and provision it to your required tenant account within 2-4 hours. Please feel free to contact us for enquiry.

If you do not have a domain yet, you can register for a .COM or .COM.SG domain here.