Eloiseler Why don't you start small? MoodleBox runs beautifully even on a RPi Zero 2 W. OK, it is low-end and also difficult to get. But the 3 B and 3 B+ are available since recently. I run a productive Moodle with 160 users and 50 getting very active during live sessions, visiting each other's quizzes, submitting questionnaires, uploading files to forum, all that in a RPi 4 B 4G.