Technology refers to the application of scientific knowledge for practical purposes. Educational technology uses engineering, information science, and behavioral sciences to promote efficient education. It has three meanings: 1) using mechanical tools for instruction, 2) applying psychological learning principles, and 3) incorporating both through systematically planning, implementing, and evaluating educational systems according to scientific principles to achieve objectives. Educational technology aims to build community, encourage critical thinking, reward risk-taking, focus on all learners, value diversity, nurture all learners, pursue innovation, and break down walls. It utilizes all educational resources in an integrated way for optimized learning.