What steps should I take to protect my Google Maps API Key?

Question

I have obtained a Google Maps API key for my domain.

The examples provided when I obtained my key show the key embedded in request parameters, for example:

Answer 1

You should use back end/server side to protect and handle key. In my case I used Django f/w server side which can serve a ajax call to get the key from server script/db then pass it onto google api.