Microsoft 365 Usage and Security Statistics for 2025

The collaboration landscape is always changing, with the average worker collaborating with more people, and in more dynamic ways, than ever before. Microsoft 365 continues to dominate the productivity and collaboration landscape due to its comprehensive suite of tools that integrate seamlessly, its robust cloud-based infrastructure, and Microsoft’s continuous investment into AI-powered features.

Microsoft 365 enables seamless collaboration, real-time editing, and access across devices. With its subscription model, Microsoft 365 offers regular updates and integrations that enhance efficiency, scalability, and security for users globally.

Expert Insights have gathered several major reports that delve into Microsoft 365 to identify the key statistics that provide insights into Microsoft 365’s capabilities, its place in the market, as its overall security.

General Market Statistics

As of February 2024, Google’s office suite controlled over 44 percent of the market share for major office suite technologies worldwide. Microsoft’s Office 365 is the other major competitor in the market and takes second place with a market share of 30 percent. (Statista)
In 2023, Microsoft had the #1 market share in endpoint security at 25.8%. (Microsoft)
Microsoft Teams is #2 in the videoconferencing market with a 32.29% share, behind Zoom with a 55.91% market share. (Statista)
Competitors to Microsoft 365 include software and global application vendors, such as Apple, Cisco Systems, Google, Meta, Proofpoint, Slack, Symantec, Zoom, and numerous web-based and mobile application competitors as well as local application developers. (Microsoft)

Who Is Using Microsoft 365?

Microsoft 365 is used by over 3.7 million companies worldwide. (Medha Cloud)
Over 1 million companies in the United States alone use Microsoft 365. Other top countries in M365 usage are the United Kingdom, Australia, the Netherlands, Canada, and Germany. (Statista)
Microsoft 365 has an average of 28.75 million users per month and around 958,000 users per day. (Medha Cloud)
Of all the customers that are using Microsoft 365, a majority (74%) are small (<50 employees), 7% are large (>1000 employees) and 19% are medium-sized. (Enlyft)
The largest segment of Microsoft 365 customers makes between $1 million and $10 million in revenue. The second largest segment makes under $1 million. (Enlyft)

How Is Microsoft 365 Used?

According to Microsoft, nearly 70% of the Fortune 500 uses the Microsoft 365 Copilot AI assistant. (Microsoft)
Outlook is the third most widely used email client, trailing behind Gmail at #2 and Apple’s native email client at #1. (Litmus)
Meetings and after-hours work are holding steady at their post-pandemic highs, and the workday still skews toward communication: in the Microsoft 365 apps, users spend 60% of their time on emails, chats, and meetings, and only 40% in creation apps like Word and PowerPoint. (2024 Work Trend Index Annual Report from Microsoft and LinkedIn)

Microsoft 365 Cybersecurity Stats

Microsoft Entra data shows password-based attacks make up over 99% of the 600 million daily identity attacks. Over the past year, Microsoft blocked 7,000 password attacks per second, highlighting the persistent and pervasive nature of these threats. (Microsoft)
Microsoft Defender for Office 365 image detection technology significantly disrupted QR code phishing attacks, causing a 94% decrease in phishing emails using this attack technique between October 2023-March 2024. (Microsoft)
During April and May 2024, there was a surge in phishing attempts targeting Microsoft Teams users… Common themes in these phishing campaigns involved impersonating Office, Microsoft, or Security services. (Microsoft)
Microsoft mitigated 1.25 million DDoS attacks [in 2024], representing a 4x increase compared with last year. (Microsoft)

Microsoft 365 is a market leader in cloud productivity suites for business. To learn more about how secure it is for businesses, how to bolster security while using Microsoft 365, how to improve its management etc., explore more of Expert Insights’ resources: