**21. The online course revolution before the COVID-19 pandemic**

Before the COVID-19 epidemic, the online course revolution was well underway. Numerous online colleges and universities provided a variety of courses. Many firms embraced the courses and were regarded as a good alternative to traditional institutions [30]. Online courses were considered a more affordable and practical choice for many students. However, there were still some issues with online courses, such as the lack of personal interaction and the potential for cheating.
