A warehouse management system (WMS) is a software application that controls daily warehouse operations by automating processes and coordinating: to pick, receive and put away goods, including equipment, inventory and orders.
Inventory Tracking
Inventory tracking is monitoring stock levels so you know which SKUs you have in your warehouse and the exact locations in which you store them.
Receiving Orders
Orders come to the warehouse system through API from multiple vendors. Those orders than can be processed and send back shipping information back to vendors via web-hooks.