WES
Also: Warehouse Execution System, WES-System, Warehouse-Execution-System, WES Software
AI-generated
A Warehouse Execution System (WES) coordinates warehouse processes and resources in real time – bridging the strategic level of the WMS with the operational control of conveyor technology and subsystems.
Key facts
- A WES orchestrates in real time the distribution of tasks among people, conveyor technology, and automated subsystems within the warehouse.
- It is positioned between the WMS and WCS, closing the gap in hybrid, partially automated warehouse environments.
- The greatest benefit arises where order volumes, priorities, and resource availability change continuously and manual control would be too slow.
- The boundaries between WMS, WES, and WCS are vendor-dependent and should be clearly defined during the selection process.
What is a Warehouse Execution System?
A Warehouse Execution System, or WES for short, is a software layer positioned between the Warehouse Management System (WMS) and the Warehouse Control System (WCS). It handles the real-time orchestration of warehouse tasks: prioritizing orders, coordinating workstations, distributing tasks among staff and automated systems, and ensuring that material flow and information flow remain synchronized. The WES originally emerged because neither traditional WMS solutions nor purely technology-focused WCS systems were capable on their own of efficiently managing hybrid warehouse environments with both manual and automated areas.
How does a WES work in practice?
The WES receives orders from the WMS or ERP, breaks them down into executable tasks, and assigns these in real time to the available resources – whether a picker, a conveyor belt, an AMR, or an automated small-parts storage system. In doing so, it continuously accounts for current conditions: the utilization of individual stations, buffer capacities, and priorities driven by cut-off times or shipping routes. If a bottleneck occurs, the WES can dynamically adjust task distribution without any manual intervention.
Typical functions include:
- Real-time task distribution to people and machines
- Prioritization by shipping wave, order urgency, or resource availability
- Control and monitoring of conveyor technology and sorting systems
- Synchronization of parallel picking streams, such as for batch or multi-order picking
- Interfaces to WMS, ERP, WCS, and subsystems such as AutoStore or shuttle storage systems
What matters when making a selection?
Whether a WES makes sense depends heavily on the complexity of the warehouse environment. In fully manual warehouses, the WMS often provides sufficient control functions. In highly automated facilities with little human interaction, a WCS is frequently enough. The value of a WES is most evident in hybrid environments where people and machines process orders together and real-time prioritization is critical to throughput.
When making your selection, you should pay attention to the following points: How deeply can the WES be integrated into existing systems? Which subsystems are natively supported? How transparent are the decision-making logics, and can they be adjusted without programming knowledge? Depending on the vendor, the boundary between WMS, WES, and WCS varies considerably – some WMS vendors integrate WES functions directly into their solution, which can blur the distinction in a specific project.
Related terms
- AGV
AGV (Automated Guided Vehicle) refers to driverless transport vehicles that automatically move goods in warehouses and production environments. They follow predefined or sensor-controlled routes without a human driver.
- AMR
AMR (Autonomous Mobile Robot) is a driverless, self-navigating transport robot that moves goods within a warehouse without any fixed installed infrastructure. It orientates itself independently using sensors and digital maps, and dynamically avoids obstacles.
- API
An API (Application Programming Interface) is a defined interface through which two software systems can exchange data in an automated and standardized way. In intralogistics, it connects systems such as WMS, ERP, or TMS with one another and with external services.
- Akustische Kommissionierung
Acoustic order picking is a paperless picking method in which warehouse employees receive pick instructions via voice and confirm each step using spoken responses. Both hands remain free throughout the actual picking process.
- AutoStore
AutoStore is a cube-based automated storage system in which driverless robots traverse an aluminum grid to stack plastic bins and retrieve them on demand for delivery to picking ports. The system is considered one of the most space-efficient automated small-parts warehouses available for standardized bin-compatible goods.
- AutoStore-Lagersystem
The AutoStore storage system is a fully automated cube storage system in which robots stack, retrieve, and transport plastic bins across a three-dimensional grid structure to stationary picking stations.
- Automatiklager
An automated warehouse is a fully or partially automated storage system in which the receipt, retrieval, transport and management of storage units are carried out without manual intervention, using conveyor technology, storage and retrieval machines, and a higher-level control software.
- Automatisches Kleinteilelager (AKL)
The Automated Small Parts Warehouse (AKL) is a fully automated storage system for totes, trays and small parts, in which storage and retrieval operations are performed without manual intervention by stacker cranes or shuttle systems.
- Batch-Kommissionierung
Batch picking is a method in which multiple customer orders are consolidated into a single pick run. This allows the picker to travel one route while simultaneously covering positions from different orders.
- Beleglose Kommissionierung
Paperless picking refers to the assembly of orders in the warehouse without paper pick lists, where all instructions are transmitted digitally via terminals, displays, voice, or optical signals.