International Society for Augmentative and Alternative CommunicationThe International Society for Augmentative and Alternative Communication (ISAAC) works to improve the lives of children and adults who use AAC. ISAAC’s vision is that AAC will be recognized, valued and used throughout the world. ISAAC’s mission is to promote the best possible communication for people with complex communication needs. Augmentative and alternative communication (AAC) helps millions worldwide who cannot rely on their natural speech to communicate. On this website you can find information about ISAAC, including our biennial conference, International AAC Awareness Month, the Leadership Project for People who use AAC, and much more.