I didn't have to sign anything (i.e. NDA), so I am allowed to post all of these questions and comments freely. What is cloud computing? What is a relational database? How do you interact with customers? How do you perform caching? Which algorithm does an Elastic Load Balancer use? Do you know EMR and Redshift? What is the biggest mistake you have made? What is EBS? How do you architect a design that is fault tolerant? What are the services you have used in AWS? What are some web protocols? What is TCP and UDP? Did you ever come across a customer that his on-premise solution was not going to work in the cloud? What available option do you have when choosing a Workspace and what are the specifications of each one? There are many more. I just can't remember all of them right now.