Pulumi

Pulumi allows you to define infrastructure using general-purpose programming languages (TypeScript, Python, Go, C#).

Why use code?

• Loops & Logic: Use real for loops, if statements, and string manipulation rather than complex interpolation syntax.
• Abstractions: Create classes and functions to abstract complex infra patterns into reusable libraries (e.g., an npm package for your company's standard microservice).
• Testing: You can write Unit Tests for your infrastructure using standard test runners (Jest, Pytest).

Pulumi vs. Terraform

The Programming Model

Pulumi builds a dependency graph of resources. It executes your code to generate this graph, then compares it to the current cloud state.

import * as aws from "@pulumi/aws";

// Create an S3 bucket
const bucket = new aws.s3.Bucket("my-bucket", {
    acl: "private",
    tags: {
        Environment: "Dev",
    },
});

// Export the name of the bucket
export const bucketName = bucket.id;