I have worked with hundreds of companies moving to AWS, and believe that this is the answer.

People are investing in cloud because its faster, more agile and better, not because it's cheaper.

The top line looks expensive, but if you then do the correct analysis on the cost side of the equation (taking out staff costs and DC costs) then I think it is either close or in the black from a cost perspective.

If the business case was really bad, I don't think we would see the rapid uptake we have seen.