Mission: Creating and supporting a forum for communities of practice in the profession of technical communication. STC is an individual membership organization dedicated to advancing the arts and sciences of technical communication. It is the largest organization of its type in the world. Its 25,000 members include technical writers and editors, content developers, documentation specialists, technical illustrators, instructional designers, academics, information architects, usability and human factors professionals, visual designers, Web designers and developers, and translators - anyone whose work makes technical information available to those who need it.