Functions and services of eshop that are realized on the order

calculation of payments for carriage of goods to the customer
calculation of packing, and bulky
calculation of discounts logic
program of bonuses
discount promo codes
options for MLM (multi level marketing)
expanded selection filter of goods technology (graphic model, mathematical model)
set the XML gateway for communication with information systems of third parties
analysis of business processes needed for B2C, B2B