This document discusses property management systems (PMS) used by hotels to automate operations. A PMS is a collection of hardware, software, and trained staff that provides automated solutions for hotel management. It interfaces with other systems like POS, CRS, RMS, etc. The main modules of a PMS include reservation, front desk, rooms, cashier, night audit/day-end, setup, reports, back office, purchase/stores, telephone, sales & marketing, and accounts receivable. Leading PMS brands used in 5-star hotels include Micros, Amadeus, IDS Fortune, and ShawMan.