Infracost scans for Terraform code changes and checks over 3 million prices to create a simple, understandable cost estimate before any resources are launched.

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This is interesting. I think we could have multiple ways of specifying the usage and they all get translated into a standard format. I imagine this requires parsing the HCL code, so as long as we can match that to the resources in the plan JSON it should be good.

Yeah we can also do the same with other tools (pulumi, etc) and translate all comments into a standard format (i.e. current usage-file), which is then used to calculate pricing. Maybe we can reuse the code in tfsec project for parsing HCL code.