What is Investment Support Association ISA? ISA is an association of corporate entities and companies doing business in Slovakia. ISA represents companies of all sectors operating in Slovakia, offering a wide range of professional services for investors enabling smooth implementation of their investment objectives. The Association serves as the “think- tank“ or “support base“ to satisfy needs of SARIO, its marketing and project activities in Slovakia and abroad. In cooperation with ISA partners, the association provides financial and organizational support for SARIO, with the support of its investment promotion activities to boost economic development in all regions of Slovakia.