Organizations using Microsoft-hosted services should maintain contingency plans for replacing them because retirements do not always follow a predictable pattern.

Chart explains various support dates and considerations for Office versions running on Windows 7 and Windows 10.

Office 365 ProPlus will receive security-only updates on Windows 7 through 2023.

Timeline shows anticipated release and retirement dates of key Office desktop, Windows client and server OS versions, and other server software for enterprises.

Outline of Microsoft support life-cycle policies, which define how Microsoft software and services are eligible for help desk assistance and other product support from the company, how long support is provided, and what customers must do to qualify for that support.

Chart summarizes the current support policies for Microsoft's on-premises, online, and Modern or continuously released and serviced products

Chart summarizes the current support policies for Microsoft's on-premises, online, and Modern or continuously released and serviced products