Inside Microsoft 365 Copilot: How It Actually Works

An architect’s perspective on grounding, orchestration, and the real engine behind AI productivity

If you’ve used Microsoft 365 Copilot, you’ve probably had that moment: “How is this thing actually doing all of this?” It reads your emails, summarizes meetings, drafts documents, and somehow feels aware of your work context. But beneath the polished UX lies a system that’s far more structured—and deliberate—than a simple chatbot.