Created a class as a sample. Cloud service by amazon. With the help of putty. You have to use the key and create a ppk extension out of it first etc. AWS is the biggest cloud out in the industry. AWS was the first of its kind and has helped many big companies today like Netflix which still uses its databases for storing data. I don't remember much about my answer but you need to make the interviewer believe that you're roots are really deep in the tech you're talking about.