Microsoft: It's 90 days until the end of Skype for Business Online, here's what to expect

Still working on your plans to move over to Microsoft Teams? Time is running out.

Keep working on your Teams upgrade plan, Microsoft has warned organizations still on Skype for Business Online as it gears up to switch off Skype for Business Online on July 31, 2021.

Microsoft warned customers with Skype for Business Online two years ago that the service would reach end of life on July 31, 2021, at which point customers would need to move to Microsoft Teams. It sent another reminder in February, six months ahead of the cut-off date, urging customers to migrate to Teams immediately. The other option is moving to an instance of Skype for Business Server.

Now, in a new blogpost three months out from deadline, it's told customers still on Skype for Business Online to "keep working your upgrade plan" and detailed what customers can expect before July 31. 

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"Skype for Business Online will be fully functional through July 31, 2021 to allow customers time to transition users to Teams or to an instance of Skype for Business Server," Microsoft said. 

But there are some other factors customers should take into account, including services integrated with Skype for Business Online, and several other interim migration options, such as "Teams Only" and coexistence mode. After the cut-off date, Teams Only will be the sole option. 

Key changes Microsoft is alerting customers to before July 31: 

In the coming weeks, Microsoft will also start scheduling "Microsoft-assisted upgrades" to Teams for customers with cloud-only or hybrid deployments as a "last-mile" transition service. Microsoft has posted a document explaining Microsoft-assisted upgrades, which will begin in August. 

Microsoft adds that users within a tenant can expect to be upgraded within 24 hours from the start of the upgrade. After the upgrade and once users log out of Skype for Business Online, they will only be able to use Teams for messages, chat and scheduling meetings.