Stop wiring infrastructure, start building agents.
Microsoft Copilot Harness lets developers build scalable agents without hosting infrastructure.
“This skill does not need you to build in infrastructure, right? You don't need to host an agent somewhere in a container, but in a simple agent that we created, you can now scale it to cover different scenarios.”
Microsoft introduced the Copilot Harness at Build, a framework enabling developers to compose agents with modular skills and sub-agents without managing hosting infrastructure. The harness supports parallel task delegation, web fetching, file operations, and bulk processing scenarios. This matters because it lowers the barrier to multi-agent development by abstracting away deployment complexity.