Associations are categorized in the domain of non-profit organizations whose goal is to improve the social benefits and well-being of the local or national community in which they operate. Since associations and their business depend on the financial resources of members, subsidies from local governments and other public institutions and public donations, their goal is to reach as many target audiences as possible through marketing communication in order to raise funds for their work and finance their activities. . Social networks are the optimal tool for marketing communication of associations. They enable them to come directly and communicate directly with users of social networks to whom they can convey messages about their activities, interest them in volunteering in the association or using the services of the association. In addition, by achieving two-way communication by creating interactive content, images and comments on social networks, it is possible to collect additional members and donations for their work, but also to increase the scope of their activities. IAESTE, as an international student association for various students, enables many students around the world to gain business internships at the international level, and its marketing communication, which is mainly focused on online communication with students, allows students to successfully approach their domain.