Lifelong learning in the information age : organizing net based learning and teaching systems While the implications of the Information Age have been discussed for a number of years the focus is now shifting to higher education and concepts for lifelong learning. The educational services needed by lifelong learners are different from traditional educational offerings: Focus is on individual learning needs and competencies to perform in complex real life situations. While classroom instruction is still the prevalent educational concept in most of the institutions offering services to lifelong learners there is a fast growing interest in net based learning and teaching and new organizational and pedagogic concepts for net learning are required. An analysis of research in the fields of human learning and instruction leads to concepts that are used to outline a co constructivist approach to net pedagogy. In addition organizational requirements for the implementation of net based learning systems supporting operational functions subsystems and roles are outlined using business process design methods and tools. Finally IS support requirements for net based learning are analyzed and a case study is used to demonstrate the prototype implementation of a groupware based co constructivist learning environment. (HoF Autorreferat)