Legacy systems can’t keep up with AI agents. Here’s how MACH architectures enable scalable, interoperable agentic AI ecosystems and what it takes to build one. There’s a common phrase in the tech community: “Don’t build your AI on quicksand.” In this sinking scenario, technology and business leaders construct AI-powered platforms by overlaying AI solutions and components on top of legacy architecture, which is designed to accommodate new tech and next-gen solutions.