That is correct; I've always found it a missed opportunity in Terraform. I still like it a lot as a tool. A unified abstraction layer would certainly work for

That is correct; I've always found it a missed opportunity in Terraform. I still like it a lot as a tool. A unified abstraction layer would certainly work for a subset of cloud offerings. Think the more basic stuff like EC2, VPCs, etc. Platform specific extensions could be handled as optional arguments to the unified objects. That said, even though you need custom Terraform definitions for each cloud vendor, using one IaC tool still beats having to use a cloud-specific one for each of your deployments. The parent's point stands.