Work IQ exposes Microsoft 365 Copilot's governed intelligence through an A2A (Agent-to-Agent) interface, letting developers build agents grounded in live organizational context — meetings, emails, files, and business data. The A2A protocol is an open standard (now under the Linux Foundation, v1 released) that enables any agent on any platform to communicate with others using a standardized task/message/artifact model. Key features include agent discovery via agent cards (JSON documents describing identity, endpoints, skills, and auth), flexible task observation (polling, streaming, webhooks), and support for multiple protocol bindings (JSON-RPC, HTTP, gRPC). A CLI tool (`@microsoft/work-iq`) lets developers prototype locally against a local A2A server before switching to a production M365 cloud endpoint with OAuth 2.0 and enterprise governance.