A breakdown of the 3.7M+ companies running Microsoft 365.
Top industries
Professional and business services523K+
Construction and building397K+
Financial services282K+
Industrial and manufacturing275K+
Health and wellness260K+
Information technology and services244K+
Art, sports and recreation237K+
Hospitality and travel152K+
No industry recorded: 484K+
Company size
1–10885,273 (40%)
11–50666,348 (30%)
51–250474,972 (21%)
251–500121,409 (5%)
501–1,00024,299 (1%)
1,001–5,00032,554 (1%)
5,001–10,0003,252 (<1%)
10,001+2,803 (<1%)
Share of companies with a recorded size, by employees.
No size recorded: 1.5M+
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Frequently asked questions
About the Microsoft 365 data on this page.
How many companies use Microsoft 365?
Firmable holds confirmed Microsoft 365 detections for 3,792,516 distinct companies, 3,639,150 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Microsoft 365?
Cresset, Tarsus Pharmaceuticals, Inc. and Steward Partners are among the most prominent in the current set.
What industries use Microsoft 365?
Professional and business services, construction and building and financial services lead the set, across 19 industries in total.
What size companies use Microsoft 365?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are Microsoft 365 users based?
The United States, Australia, Canada and New Zealand account for most detections, across 13 countries.
How current is this data?
3,639,150 companies were confirmed in the last 90 days. Last detection 13 October 2026.
