Microsoft Outlook can add every meeting a Teams or Skype meeting by default until now. In the near future, rolling out from April 2022 till approximately mid-June 20022, additional online meeting providers will be available as well. This means that every time you plan a meeting using Outlook it will add a online meeting by default. You do not have to change anything if you want the functionality. In case you disabled every meeting online in the past it will stay as it is and your configuration is not changed by this update.

At the time of writing this, the following third-party online meeting providers are recognized and support for every meeting online in Outlook:
- Zoom for Outlook
- Cisco WebEx Scheduler
- BlueJeans Meetings
- GoToMeeting for Outlook
- Google Meet Add-in
- JioMeet for Outlook
In case you are using Skype or Teams it remains as-is.
If you use several online meeting add-ins either the one is used by default which is installed by an admin or the users has to set the preferred online meeting provider. Furthermore, every meeting online only applies if the meeting duration is below 24 hours.
To turn it off (globally in your Microsoft 365 tenant) you need to run a Exchange Online Shell and set the OnlineMeetingsByDefaultEnabled to $false.
Set-OrganizationConfig -OnlineMeetingsByDefaultEnabled $false
Additional resources
- Microsoft 365 Roadmap ID 88527
- (Updated) Every Meeting Online (EMO) by Default – Support for third-party online meeting providers MC340779 – Microsoft 365 Admin Center Message Center Notification
- Set-OrganizationConfig (ExchangePowerShell) | Microsoft Docs
- Make every meeting online (microsoft.com)
- Manage add-ins in the admin center – Microsoft 365 admin | Microsoft Docs