Delivery dates rule the project. An item on twelve weeks from a manufacturer sets the opening, so the order in which equipment is committed matters more than the order in which it was chosen.
Installation is a sequence of trades. Gas, electricity, water and ventilation have to arrive in the right order and be certified, and one missing connection leaves a finished kitchen that cannot legally operate.
Service is where the margin lives. Planned maintenance on machines already sold produces predictable revenue, and knowing what was installed where, and when it was last serviced, is what makes that contract sellable.
Spares define the response. An engineer arriving without the right part has cost a journey, so knowing which components fail on which machines, and holding those, is what turns a callout into a repair.