E-learning, or electronic learning, is the use of electronic technology to deliver educational content and facilitate online learning experiences, encompassing various formats such as online courses and virtual classrooms. The history of e-learning includes key milestones like the development of the 'automatic teacher' in the 1840s, Skinner's teaching machine in 1924, and the evolution of the internet leading to the widespread adoption of online education in the 1990s. Recent developments highlight the significance of e-learning during the COVID-19 pandemic, which accelerated the transition to online education for many students.