In 2023, on-premises Microsoft exchange server deployments represented only ** percent of worldwide exchange mailboxes. Microsoft Exchange Server is Microsoft's mail and calendaring server, which runs exclusively on Windows Server operating systems and takes place mainly in the cloud, with ** percent of its mailboxes deployed in the Cloud.
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The Radicati Group. (November 6, 2023). Microsoft on-premises exchange vs cloud-based exchange deployment worldwide from 2020 to 2023 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 15, 2026, from /statistics/1230573/microsoft-on-premise-vs-cloud-exchange-mailboxes/
The Radicati Group. "Microsoft on-premises exchange vs cloud-based exchange deployment worldwide from 2020 to 2023." Chart. November 6, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 15, 2026. /statistics/1230573/microsoft-on-premise-vs-cloud-exchange-mailboxes/
The Radicati Group. (2023). Microsoft on-premises exchange vs cloud-based exchange deployment worldwide from 2020 to 2023. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 15, 2026. /statistics/1230573/microsoft-on-premise-vs-cloud-exchange-mailboxes/
The Radicati Group. "Microsoft On-premises Exchange Vs Cloud-based Exchange Deployment Worldwide from 2020 to 2023." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 6 Nov 2023, /statistics/1230573/microsoft-on-premise-vs-cloud-exchange-mailboxes/
The Radicati Group, Microsoft on-premises exchange vs cloud-based exchange deployment worldwide from 2020 to 2023 ÌÇÐÄÆƽâ°æ, /statistics/1230573/microsoft-on-premise-vs-cloud-exchange-mailboxes/ (last visited July 15, 2026)
Microsoft on-premises exchange vs cloud-based exchange deployment worldwide from 2020 to 2023 [Graph], The Radicati Group, November 6, 2023. [Online]. Available: /statistics/1230573/microsoft-on-premise-vs-cloud-exchange-mailboxes/
