Teaching and learning at a distance is now commonplace, and research, when viewed holistically, clearly demonstrates that learning a distance is generally neither bettor nor worse than learning in other situations. The research also indicates that the application of instructional design procedures is mandatory for effective instruction delivered to distant learners-instructors cannot "wing" instruction at a distance (Simonson, Zvacek, & Smaldino, 2019). This article provides an overview of research in and on distance teaching and learning. This manuscript is derived from the textbook Teaching and Learning at a Distance, by Simonson et al. (2019), with permission.