A factory connects production to the wider business system. The supplied factory references cover the topic alongside factory help material, so plan the input, production, storage, and delivery stages together.

Official Big Ambitions screenshot β source.
Start with one complete production chain
Choose a product you can supply and sell, then confirm its required inputs, machines, workers, and destination. A partial setup can create inventory costs without producing a useful output.

Official Big Ambitions screenshot β source.
Give outputs somewhere to go
Plan warehouse capacity and downstream delivery before expanding the factory. Production has little value if finished goods cannot be stored or reach the businesses that need them.
Scale after measuring the bottleneck
Run one chain long enough to observe whether limits come from inputs, worker coverage, machine capacity, storage, or delivery. Expand the specific constrained step instead of adding machines without a plan.