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Migrating to Pulumi from CloudFormation

AWS CloudFormation provides a configuration DSL for you to describe and provision infrastructure resources on AWS.

Pulumi enables you to describe the same infrastructure resources as real code, providing huge productivity gains, while decreasing the brittleness of YAML-based configuration files.

Automating your migration

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Benefits of Pulumi

Modern Programming Languages

Pulumi is infrastructure as modern code. This means you get all the benefits of a modern language for provisioning cloud infrastructure: code completion, error checking, versioning, IDE support, and general productivity gains — without the need to manage YAML and DSL syntax.

Reusable Components

As Pulumi is code, you can build up a library of packages to further enhance efficiency. Build repeatable practices through versioned packages such as: standard policies, network best practices, architecture blueprints — and deploy them to your team.

Immutable Infrastructure

Pulumi provides the computation of necessary cloud resources with a 'Cloud Resource DAG' ensuring successful deployment of cloud infrastructure — efficiently building, updating, and destroying cloud resources as required.

Creating a Simple Web Server on AWS

In this example, we use JavaScript to create a simple web server on AWS using EC2.

This code creates the necessary security group, deploys a very simple web server for example purposes, and then creates the instance, before exporting the IP and hostname.

Pulumi can be used on any resource on AWS, Azure, GCP, Kubernetes, and OpenStack, covering serverless, containers, and infrastructure.

Find many other examples here.

const aws = require("@pulumi/aws");

let size = "t2.micro";
let ami  = "ami-7172b611"

// Create a new security group for port 80.
let group = new aws.ec2.SecurityGroup("web-secgrp", {
    ingress: [
        { protocol: "tcp", fromPort: 22,
            toPort: 22, cidrBlocks: [""] },
        { protocol: "tcp", fromPort: 80,
            toPort: 80, cidrBlocks: [""] },

// Create a simple web server.
let userData =
    "#!/bin/bash \n" +
    "echo 'Hello, World!' > index.html \n" +
    "nohup python -m SimpleHTTPServer 80 &";

let server = new aws.ec2.Instance("web-server-www", {
    tags: { "Name": "web-server-www" },
    instanceType: size,
    securityGroups: [ group.name ],
    ami: ami,
    userData: userData

exports.publicIp = server.publicIp;
exports.publicHostName = server.publicDns;

How Pulumi Works


  • Code in modern languages
  • Share and reuse patterns
  • Use your favorite IDE and tools


  • Preview changes
  • Run pulumi up to deploy
  • Integrate with CI/CD


  • Audit all changes
  • Manage complex environments
  • Implement policies and controls
Featured Customer

Learning Machine

Learning Machine, a blockchain SaaS company faced two challenges with their cloud infrastructure:

  • Skills gaps between Dev and DevOps creating silos, and fragility.
  • The need to more rapidly provision their expanding roster of new customers.

By moving to Pulumi, Learning Machine were able to solve both challenges with significant increases in capability:

25,000 Lines of CloudFormation reduced to 500 Lines of JavaScript
New customer provisioning time reduced from 3 weeks to 1 hour

Pulumi has given our team the tools and framework to achieve a unified development and DevOps model, boosting productivity and taking our business to any cloud environment that our customers need. We retired 25,000 lines of complex code that few team members understood and replaced it with 100s of lines in a real programming language.

— Kim Hamilton, CTO Learning Machine

Get Started with Pulumi

Use Pulumi's open source SDK to create, deploy, and manage infrastructure on any cloud.

Google Cloud

See how top engineering teams enable developers and operators to work better together with Pulumi.

We are building a distributed-database-as-a-service product that runs on Kubernetes clusters across multiple public clouds including GCP, AWS and others. Pulumi's declarative model, the support for familiar programming languages, and the uniform workflow on any cloud make our SRE team much more efficient.

Josh Imhoff
Site Reliability Engineer, Cockroach Labs

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More from Pulumi

Migrate to Pulumi

In this video, Pulumi CTO, Luke Hoban, discusses how to begin to migrate to Pulumi from existing tools such as CloudFormation and Terraform.

Learn more
Video thumbnail diagram

Serverless, Containers, and Infrastructure

In this blog post, we show how productive Pulumi can be at combining different aspects of cloud architecture for truly cloud native programming.

Learn more