Microsoft documents autonomous event triggers in Copilot Studio
What shipped
Microsoft Learn's event triggers overview, last updated February 19, 2026, says event triggers let a Copilot Studio agent act autonomously in response to a defined event, unlike topic triggers that require input from a user, and that event triggers can only use the agent maker's credentials for authentication. Microsoft's Teams support page, updated February 26, 2026, says Copilot in Teams group chats is part of the public preview program and that anyone with a Copilot license can chat with Copilot one-on-one.
Microsoft Learn: Event triggers overview, Copilot StudioWhat this means for your business
Autonomous runs act as the maker, not the person who asked. Anyone standing up a Copilot Studio agent for a team should treat the maker account as a service identity and review what it can reach. Copilot in Teams chats is "help me now"; Copilot Studio is the separate configured route for "keep doing agreed work".
Still open
The dates are Microsoft's page update dates, not feature launch dates. Preview labels, licensing, and the billing impact Microsoft notes for event triggers can change.