# Pulumi

> Pulumi is an infrastructure as code tool where you describe cloud resources in general-purpose languages such as TypeScript, Python and Go.

- Source: https://www.itwonderlab.com/pulumi/
- Published: 2026-09-19
- Updated: 2026-09-19
- Author: Javier Ruiz Jiménez (https://www.javierruizjimenez.com/)
- Site: IT Wonder Lab (https://www.itwonderlab.com/)

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**Pulumi** is an alternative to [Terraform](https://www.itwonderlab.com/terraform/) and [OpenTofu](https://www.itwonderlab.com/opentofu/): instead of HCL you write real code with loops, functions and tests. It keeps state, shows a preview and applies changes like Terraform does.

### Key concepts

- **Stack**: an instance of a program, for example `dev` or `prod`.
- **State**: stored in Pulumi Cloud or in an object store.
- **Providers**: many are bridged from Terraform providers.

### Learn it

Compare approaches in [Terraform vs OpenTofu](https://www.itwonderlab.com/terraform-vs-opentofu/) and [Terraform vs CloudFormation](https://www.itwonderlab.com/terraform-vs-cloudformation/).