Maybe. This is a bit of a cottage industry that shouldn't need to exist. It's so hard to get data and visibility into these things in AWS right now. Billing is hard, it's impossible to easily tell what is costing me what in every region, etc. AWS should do all this natively as part of their service, but everything is so poorly designed from a user standpoint that it's very time consuming to do, so third-party services like Hakuna pop up to take advantage of the inefficiency by saving some money. I'm halfway convinced AWS does this on purpose so you have to pay them for support or training for people new to cloud service providers, or AWS specifically, increasing their revenue.
Of course they do this on purpose, it does not require a lot to give you metrics on usage and tell you if you are over provisioned, when mint.com can suggest a lower interest credit card or a higher yielding account based on my financial history, AWS cab easily do the same.
But, why would they. They rather laugh all the way to the bank!
I think you’re underestimating how hard of a problem it is to provide continuous billing information. I’ve seen SAAS companies with an engineering team dedicated just to the monthly reports, handling things like pipeline delays and data cleanliness and conversion to both a clean UI and fiddly excel spreadsheets.
Tag every resource you provision (probably on 3-5) dimensions and you’ll never wonder where your money is going. It’s a great system, but most people (including me for the first 3 years) skip the tags screen by default.
