I used to work for a company that marketed themselves as “low code” and we built custom business systems. The hard part was getting the data model right, which mostly involved understanding the customers business domain properly through long meetings. Then we could create a system that had 80-90% of necessary functionality literally within minutes just by clicking some buttons. All the simple CRUD, e.g., Create Order, Edit Customer, List all deliveries within the
last six weeks, etc., were then ready. After that there’s a lot left in the budget for writing the code for the company specific business logic and often some integrations.