DataFill's MES or Manufacturing Execution System is a collaboration between manufacturing planning (MRP/ERP) and the way the manufacturing floor is organized.

MES controls all the activities occurring on the shop floor. It begins with all the various orders from customers, the MRP system, the master schedule, and other planning sources; and then builds the products in the most effective, low cost, expedient, and high-quality way possible.

MES monitors and tracks the process of producing manufactured goods on the factory floor.

The overall goal of MES is to make certain that manufacturing operations are effectively executed to improve production output. That goal is achieved by tracking and gathering real-time and accurate data about a complete production lifecycle.