Tutor-supported courses have assignments that a tutor corrects and sends back to you. Some of these are spoken assignments and some of these are written assignments. Yes, this means that a tutor will talk with you. A tutor will see what you have written and send it back to you with comments.
It's exactly like being in a classroom with a tutor. Only better, because this is one-to-one.
It's ideal for companies because your staff get supported with a specialised English tutor who can make sure everyone has the English they need.
It's ideal for individuals because you get online lessons with a real person who will help you build your language at your time and pace.