The main differences
Documents and spreadsheets
This is usually the deciding factor. Microsoft 365 is built around Word, Excel and PowerPoint. The Business Standard and Business Premium plans include the full desktop apps, while Business Basic includes web and mobile versions only. If your team relies on advanced Excel, complex Word documents or exchanges Office files with banks, accountants and government offices, Microsoft 365 avoids formatting problems.
Google Workspace is built around Google Docs, Sheets and Slides, which work in the browser and were designed for real-time collaboration from the start. They are simple, fast and excellent for teams that write and edit together. They can open and save Office files, but very complex documents may not convert perfectly.
Email
Microsoft 365 email is used through Outlook, on the desktop, the web or mobile. Google Workspace email is Gmail with your domain. Both handle spam well. The choice is mostly about which interface your team prefers.
Storage and file sharing
Microsoft 365 stores files in OneDrive and SharePoint; Google Workspace uses Google Drive and shared drives. Both let you keep company files in team spaces owned by the business, rather than in one person's account, which matters when staff leave. Storage amounts depend on the plan.
Meetings and chat
Microsoft Teams combines chat, meetings, file sharing and channels in one app, and suits teams that want a central workspace. Google Meet is simple to start from a calendar invite or a link, and Google Chat covers team messaging.
Working offline and on slow connections
If your internet is unreliable, think about offline work. Microsoft's desktop apps work fully offline and sync later. Google's apps can work offline in the Chrome browser once offline mode is switched on in advance, but they are designed primarily for working online.
Administration and security
Both offer two-step verification, password policies, the ability to wipe company data from a lost phone, and audit logs, with more advanced security features on higher plans. Whichever you choose, turn on two-step verification for every user from day one. Our small business cybersecurity checklist covers the other basics.