ACXT is a group of professionals that was created with the idea of offering convincing answers to the usual questions. It emerged linked to IDOM group, as an extension in the world of architecture of the principles that inspired its foundation and has continued functioning for over forty years. ACXT was set up as an association of professionals. More than four hundred people work at ACXT today, more than half of them being architects. Engineers are also involved: civil, mechanical, electrical, agricultural, biologists, experts in acoustics, illumination, telecommunications, costs, building site organization, graphic designers or IT technicians. Due to the problems caused by specialization and the development of technology, they seek solutions that integrate them right from the beginning, in the project conception stage. ACXT is structured, at a first physical level, around a series of offices located all over the world. Its concept of a network of associated professionals allows it to grow and expand without the reservations caused by size and geographical dispersion. Another organizational dimension recognizes technical specialization, knowledge. Horizontally organized work teams grouped by specialization are in charge of professional and technical development of team members. The final key to the excellence of ACXT and its work lies in the sense of responsibility of all its members. Its property structure is regulated by an associative agreement between professionals. The London magazine Building Design, in its 2012 annual ranking BD World Architecture top 100, placed ACXT in position 48 of the most important firms worldwide by number of architects.