A e-commerce warehouse layout designed around full-case replenishment does not automatically work for e-commerce. Most DCs that try to run both end up doing neither well. The reason is simple: bulk fulfillment moves volume in large chunks, predictably, with wide lanes and deep rack. E-commerce moves thousands of individual units, unpredictably, and the floor plan that makes the first operation fast will quietly kill the second one. The core problem is pick density. In a tra