The Corona virus outbreak had hit several countries in the world. This has resulted in the physical closure of all types of educational institutions around the world, therefore education delivery has now shifted to “online only”. In this perspective, the online learning platform becomes one of the important aspects to be evaluated. The platform used as an online learning reference is Microsoft Teams. This study aims to find out how students perceive the use of Microsoft Teams as an alternative online learning platform at SMAN 2 Semarang in the academic year 2020/2021. The population of this study were 11th grade students of SMAN 2 Semarang. The sample used was 120 students who were determined by random sampling technique. This study uses a qualitative method. This study used 2 instruments to collect data. The instruments are questionnaires and interviews. This study uses a closed end questionnaire with 12 statements and a semi-structured interview with 6 questions. After all the data is collected, the researcher inputs the data into the Cronbatch Alpha formula on SPSS to determine whether the questionnaire is reliable or not. The results of the data analysis can be concluded that almost all students at SMAN 2 Semarang, especially grade 11 gave a positive response that Microsoft Teams is an online learning platform that can facilitate and support students in the teaching and learning process in the classroom