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Terraform vs. Pulumi: Why Experts Still Recommend Learning Terraform First

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Infrastructure-as-code (IaC) tools Terraform and Pulumi remain the two dominant choices for developers managing cloud infrastructure, but they differ significantly in approach: Terraform uses its own declarative language HCL, while Pulumi lets developers write infrastructure in mainstream languages like Python or TypeScript. Terraform's 2023 license change to Business Source License prompted the open-source community to fork it into OpenTofu, which remains a drop-in HCL-compatible replacement under the Linux Foundation; IBM then acquired Terraform creator HashiCorp in a $6.4 billion deal in February 2025. Pulumi, by contrast, has remained permissively open source under Apache 2.0 throughout. Despite Pulumi's appeal for developers already fluent in supported languages, Terraform and OpenTofu dominate job listings and are more widely deployed across existing infrastructure teams. Experts advise beginners to learn Terraform first for its larger community, job-market demand, and foundational IaC concepts, switching to Pulumi only if their team or existing skillset makes it the more practical choice.

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