請問大家知唔知pizza Hut 既系統運作係點？

here is some background info for pizza hut:
http://zh.wikipedia.org/w/index.php?title=Pizza_Hut&variant=zh-hk

i think it's difficult to find about their specific system management through the net, coz its involves lots of their commercial secert. and pizza hut will not disclose much about those info.