Logistics, defined
Logistics is the planning and work of moving and storing goods so they reach the right place at the right time.
In plain terms, picture one urgent order. A factory receives a call for a replacement part. Someone checks the part is in stock, then a worker picks it from the shelf and packs it. A dispatcher books a truck sized to the box and confirms when it can collect. The driver signs for the part, drives it to the customer and gets a signature at delivery. Finally, the paperwork confirms it arrived.
Every one of those steps is logistics. When any step slips, the part arrives late.