The IRS system as the modular platform allows for implementation of the various elements such as air, hotels, rent-a-car, and train modules. The IRS system as the modular platform allows for the implementation of the various elements such as air module, hotel module, rent-a-car module, and train module, and brings a vast spectrum of search engine functionality. The administration module will satisfy the expectations of even the most demanding users. Few types of implementation (iframe, standard or dedicated/customized graphical layer, and API) makes this solution really flexible and ready to use on each website.