Could you elaborate on the accounting part? I'm deeply involved with billing on all three and while AWS seems to have all the data you're looking for in the CUR, it can be a multi-quarter job to build up the expertise to understand that fact.
GCP has different notions, like multiple credits applying to any given charge but again once you build up the expertise you can work with it. Azure seems by far the simplest to deal with and require the least wrangling.
GCP has different notions, like multiple credits applying to any given charge but again once you build up the expertise you can work with it. Azure seems by far the simplest to deal with and require the least wrangling.