The story
The IAS is a non-profit organization founded in 1988, with a mandate to organize the International AIDS Conference. Initially, the IAS headquarters were in Stockholm, and Lars-Olof Kallings was the secretary general from 1988 until 2003.
In 2004, the IAS restructured its organization, expanded the number of professional staff and moved the headquarters to Geneva. The move was intended to strengthen organizational links with other health NGOs and (United Nations) multilateral agencies.
From Wikipedia’s article on International AIDS Society, shared under CC BY-SA 4.0.3