The Convergence of MES and IIoT: Why Traditional Manufacturing Execution Systems Are Being Disrupted
The manufacturing execution system (MES) market hit $16.7 billion in 2025. By 2030, analysts project $28.3 billion. And yet, the most interesting thing happening in manufacturing software isn't MES growing — it's MES being absorbed.
IIoT platforms are eating MES functionality from the bottom up. What started as simple machine monitoring (connect a sensor, see a dashboard) has expanded to include OEE tracking, downtime analysis, quality management, production scheduling, and work order management — the traditional domain of enterprise MES.
Meanwhile, MES vendors are adding IIoT features — edge connectivity, real-time machine data, predictive analytics — from the top down. The two categories are converging, and the result is a fundamental disruption of how manufacturers think about their factory software stack.
If your plant is running a 10-year-old MES — or worse, if you're about to sign a 7-figure MES contract — this convergence matters to you. Here's what's actually happening and what to do about it.