Skype for Business Online retires on July 31, 2021,
We recognize that customers have been working hard to complete their Skype for Business Online-to-Teams transitions by the retirement date. Some customers are going to face significant challenges to finish by July 31, 2021. We also understand the hurdles the past year has presented for organizations worldwide and the increased reliance on communication and collaboration platforms like Skype for Business Online and Teams to ensure business continuity.
- Services that integrate with Skype for Business Online will not be supported beyond the July 31, 2021 retirement. This includes support for third-party audio conferencing providers (ACP), Skype for Business Online Cloud Connector Edition (CCE), hybrid voice configurations, and Skype Meeting Broadcast.
- Customers will not be able to move online users out of Teams Only mode after retirement.
- Coexistence modes enable customers to operate Skype for Business Server/Teams side-by-side experiences until they are ready to move users to Teams Only.
- Users can be moved directly from Skype for Business Server to Teams Only after configuring Skype for Business hybrid with Microsoft 365 or Office 365.
Microsoft-assisted upgrades to Teams.. Read guidance about Microsoft-assisted upgrades for information about what to expect.
After they’ve been scheduled for a Microsoft-assisted upgrade, Skype for Business Online customers will be able to request a three-month extension of the Skype for Business Online service to help address any remaining technical or organizational readiness issues. Customers can submit requests through the Teams admin center and can expect a response within three business days. Read the latest blog post to learn more.
.(he retirement of Skype for Business Online and corresponding assisted upgrades do not affect the Skype consumer service, Skype for Business Server products and Skype for Business Online operated by 21Vianet (China Sovereign Clouds Instance).)
https://docs.microsoft.com/en-us/microsoftteams/upgrade-skype-teams