Depends on your idea. For example, if you're actually building a demo that requires collaborative features that others can try in real-time, backend can add a l

Depends on your idea. For example, if you're actually building a demo that requires collaborative features that others can try in real-time, backend can add a lot to the working and cool factor. Imagine you're making a skribbl.io clone, you can't just fake other user's live inputs.