The dissertation by Damla Yildirim investigates eLearning practices across various subject-matter contexts in higher education, aiming to enhance the effectiveness and efficiency of eLearning environments. It explores the technological, instructional, and organizational aspects of eLearning and identifies key characteristics that can improve quality in education, while addressing the challenges faced in different disciplines. The research highlights the need for interdisciplinary cooperation and evidence-based practices to overcome barriers and improve eLearning strategies.