Performance recommendations
From MoodleDocs
Large installations tend to separate the web server and database onto separate servers, although for smaller installations this is typically not necessary.
Note: You are currently viewing documentation for Moodle 3.3. Up-to-date documentation for the latest stable version of Moodle is probably available here: Performance recommendations.
Large installations tend to separate the web server and database onto separate servers, although for smaller installations this is typically not necessary.