I conduct online tutions in Science and Mathematics. I am thinking that if I have web based whiteboard application, then it will be good. I have a website. My plan is that I will give a url to my student. That url will contain whiteboard + chat application. We will interact through that. It should be possible to draw text and various shapes like circle, triangle, etc. on the whiteboard. Any change made by one of us should be seen in real time by the other.
What technologies should will be required in this? What things should my hosting provider give for this application to run?