A kit is an assembly or bundle of multiple products that are purchased and fulfilled together. For example, a suit product can be a kit that contains pants and a jacket.
You can ask Shopify Fulfillment Network (SFN) to create kits before or after you receive orders. If you want SFN to create kits with your products in special packaging or handling, then you can ask SFN to create preassembled kits before you receive orders for those kits. If you want SFN to create kits only after you receive an order, and you don’t need special packaging or handling for your kits, then you can ask SFN to create kits on demand.