What Is Microsoft 365? Plans, Apps, and Key Features
SkillVeris Team
Learning Team
Microsoft 365 is a subscription bundle of Office desktop apps, cloud storage, and collaboration tools, replacing the older one-time-purchase Office model.
In this guide, you'll learn:
- A subscription includes continuous updates and new features, unlike the older boxed Office versions that were frozen at the version you bought.
- OneDrive cloud storage is bundled in, letting files sync across devices and be shared or co-edited in real time.
- Plans split broadly into personal/family tiers and business tiers, with business plans adding Teams, admin controls, and larger mailboxes.
- Real-time co-authoring lets multiple people edit the same Word, Excel, or PowerPoint file simultaneously, with changes visible live.
1What Is Microsoft 365?
Microsoft 365 is a subscription service that bundles the Office desktop applications, Word, Excel, PowerPoint, and Outlook, with cloud storage on OneDrive and collaboration tools like Teams, all kept continuously updated for as long as the subscription is active.
It replaced the older model of buying Office once as a boxed product with a fixed feature set; instead you pay monthly or yearly and always have the current version, plus cloud services that a one-time purchase never included.
2What's Included
Every Microsoft 365 plan bundles a consistent core: the familiar Office desktop apps, cloud storage, and web-based versions of each app you can use from a browser.
- Word, Excel, and PowerPoint for documents, spreadsheets, and presentations
- Outlook for email and calendar management
- OneDrive cloud storage that syncs files across devices
- Web versions of each app, usable from any browser without installing anything
- Teams for chat, video calls, and collaborative workspaces (included on most plans)
3Personal vs Business Plans
Personal and Family plans are aimed at individuals and households: they cover a set number of people, a fixed amount of OneDrive storage each, and standard consumer support.
Business plans add things a household doesn't need: custom email domains, larger or unlimited mailboxes, admin controls to manage users and security settings across an organization, and compliance features required in regulated workplaces.
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4Real-Time Collaboration
Because files live in OneDrive rather than only on one computer, Microsoft 365 supports real-time co-authoring: multiple people can open the same Word, Excel, or PowerPoint file at once and see each other's edits appear live, with automatic version history if something needs to be rolled back.
This is a meaningful shift from the older model, where sharing a document meant emailing a copy back and forth and manually merging changes.
5Microsoft 365 vs Similar Suites
Microsoft 365's core strength is the depth of its desktop applications, particularly Excel's formula and data-analysis capabilities, alongside broad enterprise adoption that makes file compatibility rarely an issue.
Competing suites built purely around browser-based apps can feel lighter and faster for simple documents, but generally offer less depth for complex spreadsheets or desktop-grade formatting.
6Security and Admin Features
Business and enterprise plans include an admin center where an IT administrator can manage user accounts, enforce multi-factor authentication, set data-loss-prevention rules, and control which devices can access company data.
- Multi-factor authentication and conditional access policies
- Data-loss prevention to stop sensitive information from leaving the organization
- Device and app management from a central admin console
- Built-in threat protection for email and files
7Getting Started and Choosing a Plan
Start by counting who needs access and whether they need business email and admin controls; that answer narrows the choice to personal, family, or business tiers quickly.
If you want to build genuine fluency in the core apps, particularly Excel, SkillVeris's Excel study notes and glossary cover the formulas, shortcuts, and data tools that make the biggest practical difference day to day.
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SkillVeris Team
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