Internet Booking Engine Test our IBE caesar data! On the two subpages you can test both variants of our online booking system and find out which version suits you best. caesarclassic This version is ideally suited for city hotels, business hotels and hotels without children's offers. The bed tax can also be calculated. Test now for free and without obligation the classic version of caesar data. Test now! caesar family This variant of the online booking system is ideal for family-friendly hotels. and holiday hotels, as children's prices for both the overnight stay and the can be managed during meals. Test now simply free of charge and without obligation the family version of caesar data. Test now!