> It seems like AWS' entire business model is making the pricing so confusing that you don't know what it will cost until after you've used it. This is patentl

> It seems like AWS' entire business model is making the pricing so confusing that you don't know what it will cost until after you've used it. This is patently not true. AWS is very transparent with the pricing and offers a cost calculator. Specifically for EFS, you could have used the EFS service cost calculator before setting off with your endeavours: https://calculator.aws/#/createCalculator/EFS https://calculator.aws/#/createCalculator/EFS Other services are available at https://calculator.aws/ https://calculator.aws/ Any work on any cloud platform has an imperative step: the cost analysis. Once constituents of the solution are finalised (step 1), it is compulsory to proceed to step 2: estimate the charges it is going to cost and decide whether it is affordable or not. Skipping the step 2 and blaming the cloud platform provider business model is not fair and is akin to overspending on a credit card and blaming the credit card issuer for allowing you to do it. Cloud is not dissimilar from UNIX/Linux – both give one a large variety of elaborate footguns to shoot oneself with, and if they worked as root on a software development project on a UNIX/Linux box and accidentally wiped the root file system out, who is to blame? Since cloud charges are usage based («pay as you go»), the cost estimate is a requisite that can't be avoided unless the budget is unlimited.