Due to Covid 19, the world has experienced unprecedented changes. The transition from traditional face-to-face education to online education took place naturally. The development and research of various online translation and interpretation (T&I) educational content are urgently needed for education in the future. This paper discusses the development and operation of online educational content in T&I. Furthermore, MOOC (Massive Open Online Course) is an online course aimed at unlimited participation and open access via the Web. In Korea, the Korean Massive Open Online Course (K-MOOC) was established in 2015, and by 2022, 1358 courses were being serviced. This paper presents the class design and lecture composition of an online T&I educational content of K-MOOC, the name of which is “The Core of Global Communication, Interpretation and Translation,” and analyzes findings from surveys of students who attended that class; offering insights into the effectiveness of the online educational course in T&I. The results indicate that students were generally satisfied with their online learning experiences and positively evaluated the efficacy of online T&I content. Despite some limitations, this paper points to promising aspects of delivering online T&I content.