TITLE: Microsoft Launches Copilot Cowork: AI Agent That Operates Files on Employee Computers DATE: 2026-03-13 COMPANY: Microsoft TOPIC: Agent Systems SUMMARY: Microsoft entered the AI coworker category with Copilot Cowork, an enterprise agent that reads, analyses, and manipulates files directly on employee computers. Built using both Anthropic and OpenAI models, it selects the best model per task. For businesses already in the Microsoft 365 ecosystem, this offers a direct path to file-level automation without additional third-party tools. WHAT CHANGED: Microsoft launched Copilot Cowork, a desktop-level AI agent capable of reading, modifying, and managing files across a users computer. The system uses multiple AI models selected dynamically based on the task, and integrates with the Microsoft 365 stack. It represents Microsofts entry into the autonomous AI coworker category. WHY IT MATTERS: Moving from AI assistants that respond to prompts to AI agents that autonomously act on files represents a significant capability shift. For M365 businesses, this removes the integration work required to build file-level automation and delivers it through a familiar vendor relationship. DAVID & GOLIATH ANALYSIS: This development reinforces our belief that the next generation of organisations will be built on intelligent systems, not larger teams. Assess which high-frequency file tasks in your organisation (weekly reports, contract drafts, data collation) could be delegated to an agent. Copilot Cowork is the lowest-friction path to file automation for existing M365 customers. RELEVANT SYSTEMS: Employee Amplification Systems, AI Growth Engine SOURCE URL: https://davidandgoliath.ai/daily-ai-briefing/microsoft-launches-copilot-cowork-ai-agent-that-operates-files-on-employee-compu FEED URL: https://davidandgoliath.ai/daily-ai-briefing/feed --- Published by David & Goliath | https://davidandgoliath.ai Daily AI Briefing: one AI development per day, decoded for business operators. This is a structured companion file optimised for LLM retrieval and citation.