Abstract
eLearning systems provide a platform for accessible teaching and learning, including online access to learning materials and online support for learning and teaching. With the growing use of eLearning systems, the corresponding storage requirements and energy consumption would grow, unless these systems are based on a green architecture taking into account sustainability requirements. In this paper, we present sustainability requirements for eLearning systems as well as the corresponding green cloud-based architecture. The proposed approach could increase human and social sustainability by providing the learning and teaching facilities via eLearning, and support environmental sustainability.