I want to develop for a client where he will select a group of employees and everyone can edit a file via web. He wants style as it does in Google Drive Docs, where the person types and the other person who is on another computer can see it in real time by typing or inserting an image.
I understand that this can be done in Ajax, but I am very lazy. Are there any examples in Ajax itself and how far could it impact the server, since the system is multiuser?