Pulumi serves as the strongest contender to Terraform when doing IaC (infrastructure as code). Terraform attempts to be a declarative markup language (HCL) but it has a lot of weird imperative quirks due to (understandably) trying to support common complex use cases. In the end they have a clunky custom language that tries to do what general programming languages have done well forever. Pulumi doesn't re-invent the wheel, and lets programming languages do what they do best. Pulumi only really cares that the programming language generates a declarative spec that can be used to compare with your infrastructure. It's the best of both worlds.
Pulumi serves as the strongest contender to Terraform when doing IaC (infrastructure as code). Terraform attempts to be a declarative markup language (HCL) but it has a lot of weird imperative quirks due to (understandably) trying to support common complex use cases. In the end they have a clunky custom language that tries to do what general programming languages have done well forever. Pulumi doesn't re-invent the wheel, and lets programming languages do what they do best. Pulumi only really cares that the programming language generates a declarative spec that can be used to compare with your infrastructure. It's the best of both worlds.