For over 100 years the American Institute of Architects has published standard forms of agreement to be used in the design and construction of projects in which architectural design plays a prominent role. The concepts, if not the actual documents, are widely used around the world. The forms are revised around very 10 years. This involves a lengthy process in which the AIA attempts to gather opinions from all facets of the industry concerning current best contractual practices.
Source: American Institute of Architects