Why WES appeared
Classic warehouse management released work in fixed waves. Classic warehouse control executed whatever it was given. Neither looked at the whole floor and asked: “who or what is free right now?”
A WES fills that gap. It typically handles:
- Waveless or dynamic order release based on live capacity.
- Task allocation between manual zones, pick-to-light, goods-to-person stations and robots.
- Re-balancing when a station is congested or a machine stops.
The cost of a third layer
In many warehouses, WES became a third product from a third vendor, with a third interface. Each layer improves one part of the flow but adds a seam.
One platform instead of three
Kulmen plans work, allocates it between operators and machines, and controls the machines, on one database and one set of screens. In a flow-assisted warehouse, the same order can be split between a pick-to-light zone and a conveyor without crossing any system boundary.
See WMS vs WCS vs WES for a side-by-side comparison.