The International Association of Scientific Experts in Tourism (Association Internationale D'Experts Scientifiques Du Tourisme [AIEST]) was founded in 1951. This makes the AIEST the oldest international association of academics and practitioners in tourism. It is a voluntary organisation. It is a unique social network with around 150 members in 49 countries on all continents. This network is devoted to an interdisciplinary approach to serving the needs of research in tourism. It includes an Academic as well as a Practitioner stream that allows international scientific and practical exchanges. The AIEST has contributed significantly to an objective understanding of the modern phenomenon of tourism, and the scientific acceptance of studies in this field. Its members help to pinpoint the latest developments and trends in tourism and to devise farsighted solutions for new challenges as they arise.