That doesn’t work in all cases. I’ve recently come across two examples where we had a hard time explaining our costs even though we extensively tag and even have fine-grained AWS accounts:
Some costs can’t be tagged or at least not easily, e.g. custom CloudWatch metrics.
For some resources it makes a lot more sense to provide them centrally for multiple services at once, e.g. NAT gateways or load balancers.
Not only is that free, but I can’t imagine a better alternative. And they would have the same issue with allocation on prem. WithOUT tagging and Cost Explorer.
Not sure what is hard in it - you need consistent tagging, and that by itself gives you a lot of mileage in cost explorer.
That doesn’t work in all cases. I’ve recently come across two examples where we had a hard time explaining our costs even though we extensively tag and even have fine-grained AWS accounts:
Not only is that free, but I can’t imagine a better alternative. And they would have the same issue with allocation on prem. WithOUT tagging and Cost Explorer.