Stages of the upgrade journey, with emphasis on the Technical Readiness stage

This article is part of the Technical Readiness stage of your upgrade journey, an activity you complete in parallel with the User Readiness stage. Before proceeding, confirm that you’ve completed these activities from previous stages:

Prerequisites and environmental dependencies for Teams

Teams combines multiple Office 365 services, and is therefore dependent on the correct implementation and operation of these services. These services include—but aren’t limited to—SharePoint Online, Exchange Online, and OneDrive for Business.

Although not all services are required, we highly recommend that you implement all of them. If you choose not to implement certain services, it will affect the functionality that Teams can offer your organization. For example, though you don’t have to implement SharePoint Online, Teams does rely on SharePoint Online for certain functionality such as file sharing in group conversations, so not implementing this service will reduce the functionality offered through the client.

See the following articles to learn about prerequisites and how Teams interacts with other technologies:

After you’ve verified that your environment meets all applicable prerequisites, evaluate your current environment for Teams.