Hotel reservations systems, commonly known as a central reservation system (CRS) is a computerized system that stores and distributes information of a hotel, resort, or other lodging facilities.
A Central Reservation System is a tool to reach the Global Distribution Systems as well as Internet Distribution Systems from one single system, namely a central reservation system. A CRS is mainly an assistance for hoteliers to manage all of their online marketing and sales, where they can upload their rates & availabilities to be seen by all sales channels that are using a CRS. Sales Channels may include conventional travel agencies as well as online travel agencies. A hotelier using a central reservation system easens his/her tasks for online distribution, because a CRS does everything to distribute hotel information to the sales channels instead of the hotelier.
Below is the list of main modules that are present in a CRS:
Groups and Blocks
Rate and Inventory Control
Global Distribution Interface