Group business is a significant revenue source for the Lufthansa Group Airlines. Approximately 6 million of customers travel in groups, generating revenues of approximately 1.1 bn. €* (revenue share of LH 79%, LX 13% and OS 8%). The aim of the Groups4Group project is to develop an aligned group business online booking platform for all three LHG hub airlines. The ecision was taken to replace three different tools by expanding the already implemented Lufthansa B2B IT solution "BookaGroup" by Austrian Airline and SWISS.