The document discusses instructional systems and instructional technology. It defines instructional systems as consisting of people, materials, and methods working together to help students achieve learning objectives. Instructional technology incorporates various forms of technology into the educational process, such as virtual classrooms and online courses, to create engaging learning experiences. Examples of instructional technology include computer-based learning, online learning, and instructional videos. The document also discusses how instructional designers, e-learning developers, online teachers/mentors, and educational software consultants are roles that support instructional technology.