Educational technology includes various types of media like text, audio, images, videos and applications that deliver instructional content. Learning can occur in or outside the classroom, and can be self-paced asynchronous learning or instructor-led synchronous learning. There are two main types of educational technology - synchronous and asynchronous. Synchronous learning occurs in real-time with participants interacting simultaneously, while asynchronous learning is self-paced without dependency on other participants' schedules. Examples of each type are discussed along with their advantages and uses.