AWS is a great example of a topic that used to be specific, but has now grown too general to have a great consulting practice. AWS billing, by contrast, is a f

AWS is a great example of a topic that used to be specific, but has now grown too general to have a great consulting practice. AWS billing, by contrast, is a fantastic topic; I actually know someone who specializes in this, and he's making a killing by saying, "I'll save you hundreds of thousands of dollars each month on AWS fees."