In my time at a national Dominos HQ (several years), we were told Pulse was being re-written but it never arrived. It was managed by the US HQ, and all the international franchises (Each country is a franchise, that then subfranchises) were required to license it -we assumed it was calling sales #'s home to validate franchisee payments. The POS system has to handle an enormous db of combos/deals/sizes and then filter by available ingredients, national sales, buy one get one, franchisee overrides, which was then patched to have overrides that match the online ordering every hour. (eg. national large peperoni sale, limited by franchisee to just buy two get one deal, only off peak, on tuesdays, when sales are slow). Oh and it has to run on comodity hardware that the franchisee paid for 5 years ago and is too cheap to replace.
The fun logic was in profiling stores and making predictions about ingredients requirements.