The increasingly widespread use of the Internet in educational institutions and at home has led to new models of communication between professors and students, and between students and students. Online communication is becoming more common and accepted as a means of communication in educational systems. This paper examines learning and teaching through online synchronous and asynchronous communication channels, and the most used tools for said communication. For synchronous communication of Zoom, Microsoft Teams and Google Meet, for asynchronous communication use e-mail and forums. The goal was to examine student attitudes when using synchronous and asynchronous communication, as well as the advantages and disadvantages of the application. The paper consists of a theoretical part and short empirical research conducted on 50 respondents of the Faculty of Informatics in Pula. The paper shows some of the significant indicators that influence the use of both types of communication. Such as the understanding of academic tasks without active participation, a sense of connection and community, flexibility of time and space, fear of criticism, speed and dynamics of solving tasks, and easier expression of one's own opinions.