This document provides an overview of technology-based learning environments (TBLEs). It defines TBLEs as any learning environment that incorporates technology. TBLEs can range from structured online courses to less structured immersive environments. The document reviews different types of TBLEs and discusses important factors for effective TBLE design such as content, interaction, accessibility, and assessment. It concludes that TBLEs provide opportunities for more engaged, student-centered learning and challenges educators to create TBLEs that support this engagement.