Why this matters in your ERP selection: In unit production, items are produced one by one (weighing, artisan products, etc.). In this case, ERP software must be able to accommodate many customer specifications. When products are made in multiple quantities at once, we refer to batch or series production. Due to the larger runs, inventory management functionalities are important. In continuous production, the production process is kept running as much as possible. As a result, ERP software must excel at calculating optimal capacity utilisation.