Online booking and reservation has transformed into a separate industry on the Web; for example, now online ticket reservation may be met not only at the travel companies' websites, but also on websites and blogs far from traveling. Another huge business in every part of the Globe - rental car – also provides for numerous online facilities for reservations; furthermore, now the car rental Internet outlets are uniting many rental car companies, where providing services online like, for example, web directory listing maintaining and updating, sharing ads costs and online campaign fees are split among the participants and, thus, is much cheaper.

From the end consumers' point of view such online services like ticket reservation are the great option to pick a route or an airway, and make online reservation, while saving both time and money. Any decent ticket reservation system is adventitious not only from the customers' viewpoints, the participating companies and service providers are finding such systems very beneficial as well. As an example may be considered a travel agent activity, where the agent cannot maintain the information on flights, airfare tariffs, hotel rates, car rentals and many, many other bits of precious information that is always crucial for customer's decision making. In case this agent joins one or a few such associations running these outlets of information, he or she may operate solely and come into agent agreements with as many other operators as needed to meet customers' demands and reply any inquiries of them.