“Microsoft market share” varies by category. Below are current snapshots across Microsoft’s biggest surfaces: Windows (operating systems), Edge (browsers), Bing (search), and Azure/Microsoft (cloud infrastructure services).
Microsoft share of cloud infrastructure services (worldwide): 21% in Q4 2025.
Windows Market Share (All Operating Systems)
On a worldwide, all-device basis (desktop + mobile + tablet), Windows is behind Android, but still holds a large share of overall operating system usage.
Operating System Market Share (Worldwide, January 2026)
Label
Bar
Value
Android
36.18%
Windows
32.52%
iOS
15.55%
Unknown
7.38%
OS X
3.38%
macOS
2.28%
Max = 36.18%. Widths: Android 100.00%, Windows 89.88%, iOS 42.98%, Unknown 20.40%, OS X 9.34%, macOS 6.30%.
Windows Market Share (Desktop Operating Systems)
On desktop computers worldwide, Windows remains the clear leader in operating system usage.
Desktop OS Market Share (Worldwide, January 2026)
Label
Bar
Value
Windows
67.7%
Unknown
15.26%
OS X
7.03%
macOS
4.76%
Linux
4.02%
Chrome OS
1.23%
Max = 67.7%. Widths: Windows 100.00%, Unknown 22.54%, OS X 10.38%, macOS 7.03%, Linux 5.94%, Chrome OS 1.82%.
Microsoft Edge Market Share (Browsers)
Edge’s share is meaningfully higher on desktop than in all-device totals (where mobile browsers dominate). In January 2026, Edge was 4.65% worldwide across all devices and 9.14% on desktop.
Desktop Browser Market Share (Worldwide, January 2026)
Label
Bar
Value
Chrome
76.39%
Edge
9.14%
Safari
5.29%
Firefox
4.05%
Opera
2.21%
Brave
1.16%
Max = 76.39%. Widths: Chrome 100.00%, Edge 11.96%, Safari 6.92%, Firefox 5.30%, Opera 2.89%, Brave 1.52%.
Microsoft Bing Market Share (Search Engines)
Bing’s share is higher on desktop than on all devices. In January 2026, Bing was 4.45% worldwide across all devices and 10.19% on desktop search.
Desktop Search Engine Market Share (Worldwide, January 2026)
Label
Bar
Value
Google
82.72%
Bing
10.19%
Yahoo!
2.67%
YANDEX
2.11%
DuckDuckGo
0.84%
Max = 82.72%. Widths: Google 100.00%, Bing 12.32%, Yahoo! 3.23%, YANDEX 2.55%, DuckDuckGo 1.02%.
Microsoft Azure Market Share (Cloud Infrastructure Services)
In cloud infrastructure services (IaaS, PaaS, and hosted private cloud services), Synergy Research Group reports Q4 worldwide market shares of 28% (Amazon), 21% (Microsoft), and 14% (Google). Synergy also estimates quarterly cloud infrastructure revenue at $119.1 billion in Q4 2025 and $419 billion for full-year 2025.
Synergy Research Group — Cloud infrastructure services market shares and revenue (Q4 2025): https://www.srgresearch.com/articles/genai-helps-drive-quarterly-cloud-revenues-to-119-billion-as-growth-rate-jumped-yet-again-in-q4
