**Overview**

The Microsoft 365 Messaging team builds and operates the trusted, secure, intelligent, and scalable messaging and notification platform that powers Copilot across Microsoft 365. We are the connective tissue behind Copilot’s conversations and notifications — the platform that lets Copilot connect, converse, remember, notify, and continue the thread across Microsoft 365 Enterprise and Consumer Copilot, Microsoft Teams, Outlook and beyond. We operate at extraordinary scale, and Copilot is our fastest-growing workload as agentic, multi-step AI experiences become first-class.

As a Principal Product Manager on the team, you will own the strategy and charter to establish the conversation store as the platform of choice for all Copilot scenarios — and to extend that platform into the connected areas of Notifications and Tasks. You will set the multi-year vision for how Copilot and agents persist, load, and reason over conversations, then drive its execution acros...