[Introduction]

Microsoft Teams is introducing slash (/) commands for apps in the compose box across chats and channels. This change provides a standardized way for users to invoke app functionality directly from the compose box and receive responses inline.

This message is associated with Microsoft 365 Roadmap ID 495002.

[When this will happen:]

• Targeted Release (Worldwide): We will begin rolling out in late May 2026 and expect to complete by late June 2026.
• General Availability (Worldwide): We will begin rolling out in early July 2026 and expect to complete by late July 2026.

[How this affects your organization:]

Who is affected:

• All Microsoft Teams users
• App developers publishing apps in the Teams Store

What will happen:

• Users can type “/” in the compose box to discover and invoke supported app commands.
• Apps can return responses as Targeted Messages (visible only to the user who invoked the command).
• The feature is available by default when apps support slash commands
• No changes to existing admin policies or permissions.
• Apps will only appear in slash commands if their developers update the app manifest to define supported commands.

[What you can do to prepare:]

• No action is required.
• Review internal app inventory and confirm continued availability of apps that adopt slash commands.
• Update internal guidance if you provide documentation on Teams app usage.

[Compliance considerations:]

Introduces a new targeted messaging pattern (user-only visibility) within chats and channels.