Small and medium businesses: In this category, there are Basic, Standard, and Premium plans. The Basic plan offers Office apps (Outlook, Word, Excel, PowerPoint, and OneNote) for online, mobile-only use, and grants 1 TB storage per user. The Standard and Premium tiers include the corresponding desktop Office apps along with additional services.

Schools: Microsoft offers plans to schools under the "Education" banner. The plans are A1, A2, and A3. A1 offers Office apps (Outlook, Word, Excel, PowerPoint, and OneNote) for online and mobile-only use. The A2 plan additionally provides access to the corresponding desktop apps. Power BI is only available with the A3 plan.

Nonprofit organizations: This category includes a basic and a standard plan. The primary difference between the two plans being that the standard plan lets you download Office Apps for desktop whereas the basic plan lets you access office applications only on the web.

Home users: For home users, Microsoft offers a one-time purchase or two subscription-based plans (family and individual) to choose from. The one-time purchase plan lets you use only three apps (Word, Excel, and PowerPoint) on a single device. Family and individual plans offer additional apps.

Enterprises: Enterprises can choose between the E3 and E5 plans. The E5 plan is the premium version that includes all Microsoft 365 apps and services.

First-line workers: The first-line workers are the first ones to represent your organization. Microsoft 365 offers the F3 plan to help such workers stay productive. The F3 plan offers Office web and mobile apps, OneDrive for Business, and a few other Microsoft 365 services.

Standalone plans: Besides the plans mentioned above, some services are also available with Standalone plans. These can even be included in plans that do not offer these services by default. The standalone plans are listed here: https://m365book.page.link/standalone-plans