Summary
Details
Updated September 18, 2025: We have updated the timeline. Thank you for your patience.
Before this rollout, Microsoft Teams town hall attendees typically watch the presentation with a 20-30 second delay. After this rollout, with ultra-low latency (ULL), attendees will be able to view and participate in a town hall at a much lower latency than before, ensuring they are in sync with content being shared by presenters and organizers.
This feature is available for town hall organizers with a Teams Premium license. This feature will only be available for tenants who use the Microsoft eCDN (Enterprise Content Delivery Network) or who do not have an eCDN provider.
This message applies to Teams for Windows desktop, Teams for Mac desktop, Teams for the web, and Teams for iOS and Android.
This message is associated with Microsoft 365 Roadmap ID 486535.
[When this will happen:]
Targeted Release: We will begin rolling out early September 2025 and expect to complete by mid-September 2025.
General Availability (Worldwide): We will begin rolling out mid-September 2025 and expect to complete by mid-October 2025.
General Availability (GCC): We will begin rolling out late September 2025 and expect to complete by late October 2025.
[How this will affect your organization:]
This change will be on by default for attendees in town halls scheduled by Teams Premium organizers.
[What you need to do to prepare:]
This rollout will happen automatically by the specified dates with no admin action required before or after the rollout. You may want to notify your users about this change and update any relevant documentation.
In addition, we recommend that you allowlist the domains recommended for Microsoft Teams as suggested in the article Microsoft 365 URLs and IP address ranges - Microsoft 365 Enterprise | Microsoft Learn, including the *.ml.cdn.office.net domain.
Before rollout, we will update this post with new documentation.
Related Roadmap Items
Change History
Updated July 23, 2025: We have updated the timeline. Thank you for your patience.
Before this rollout, Microsoft Teams town hall attendees typically watch the presentation with a 20-30 second delay. After this rollout, with ultra-low latency (ULL), attendees will be able to view and participate in a town hall at a much lower latency than before, ensuring they are in sync with content being shared by presenters and organizers.
This feature is available for town hall organizers with a Teams Premium license. This feature will only be available for tenants who use the Microsoft eCDN (Enterprise Content Delivery Network) or who do not have an eCDN provider.
This message applies to Teams for Windows desktop, Teams for Mac desktop, Teams for the web, and Teams for iOS and Android.
This message is associated with Microsoft 365 Roadmap ID 486535.
[When this will happen:]
Targeted Release: We will begin rolling out early September 2025 and expect to complete by mid-September 2025.
General Availability (Worldwide): We will begin rolling out mid-September 2025 and expect to complete by late-September 2025.
General Availability (GCC): We will begin rolling out late September 2025 and expect to complete by early October 2025.
[How this will affect your organization:]
This change will be on by default for attendees in town halls scheduled by Teams Premium organizers.
[What you need to do to prepare:]
This rollout will happen automatically by the specified dates with no admin action required before or after the rollout. You may want to notify your users about this change and update any relevant documentation.
Before rollout, we will update this post with new documentation.
Updated September 18, 2025: We have updated the timeline. Thank you for your patience.
Before this rollout, Microsoft Teams town hall attendees typically watch the presentation with a 20-30 second delay. After this rollout, with ultra-low latency (ULL), attendees will be able to view and participate in a town hall at a much lower latency than before, ensuring they are in sync with content being shared by presenters and organizers.
This feature is available for town hall organizers with a Teams Premium license. This feature will only be available for tenants who use the Microsoft eCDN (Enterprise Content Delivery Network) or who do not have an eCDN provider.
This message applies to Teams for Windows desktop, Teams for Mac desktop, Teams for the web, and Teams for iOS and Android.
This message is associated with Microsoft 365 Roadmap ID 486535.
[When this will happen:]
Targeted Release: We will begin rolling out early September 2025 and expect to complete by mid-September 2025.
General Availability (Worldwide): We will begin rolling out mid-September 2025 and expect to complete by mid-October 2025.
General Availability (GCC): We will begin rolling out late September 2025 and expect to complete by late October 2025.
[How this will affect your organization:]
This change will be on by default for attendees in town halls scheduled by Teams Premium organizers.
[What you need to do to prepare:]
This rollout will happen automatically by the specified dates with no admin action required before or after the rollout. You may want to notify your users about this change and update any relevant documentation.
In addition, we recommend that you allowlist the domains recommended for Microsoft Teams as suggested in the article Microsoft 365 URLs and IP address ranges - Microsoft 365 Enterprise | Microsoft Learn, including the *.ml.cdn.office.net domain.
Before rollout, we will update this post with new documentation.
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