The educationas processes and systems, teachers and studentswas affected by corona-virus pandemic, across the world. Since pandemic imposed rigorous social distancing, the education process has migrated to online environment, supported by appropriate technologies, with multi-sided effects on students, teachers, and technology producers. Thus, amid its profound negative impact, corona-virus pandemic functioned as an accelerator of using new online teaching technologies. The authors' scope of work encompassed a variety of education levels (from elementary to higher education) in Romanian educational environment. This chapter aims at summarizing major lessons learned by the authors' direct experiences of teaching under pandemic in two different education settings (international school, university)with the general objective to formulate recommendations to: (i) teachers; (ii) students; (iii) education policymakers; as well as specific objectives: to identify similarities and significant differences among students by age and level of education; and eventually formulate recommendations for technology producers. Essentially qualitative, the research methodology included secondary research (literature survey) and primary research methods (observation, interview and survey)based on the authors' direct experience, yet teaching both local and international students. This study contributes at filling a literature gap, and opening further research paths in the field of online education.