Terraform vs Pulumi Comparison

# Terraform — AWS VPC + EC2 instance
terraform {
  required_providers {
    aws = { source = "hashicorp/aws", version = "~> 5.0" }
  }
  backend "s3" {
    bucket = "tfstate-bucket"
    key    = "prod/terraform.tfstate"
    region = "eu-west-1"
  }
}

resource "aws_vpc" "main" {
  cidr_block           = "10.0.0.0/16"
  enable_dns_hostnames = true
  tags = { Name = "production-vpc" }
}

resource "aws_instance" "web" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = "t3.micro"
  vpc_security_group_ids = [aws_security_group.web.id]
  tags = { Name = "web-server" }
}

// Pulumi — AWS VPC + EC2 (TypeScript)
import * as aws from "@pulumi/aws";

const vpc = new aws.ec2.Vpc("main", {
  cidrBlock: "10.0.0.0/16",
  enableDnsHostnames: true,
  tags: { Name: "production-vpc" }
});

const sg = new aws.ec2.SecurityGroup("web-sg", {
  vpcId: vpc.id,
  ingress: [{ protocol: "tcp", fromPort: 80, toPort: 80, cidrBlocks: ["0.0.0.0/0"] }],
  egress:  [{ protocol: "-1", fromPort: 0, toPort: 0, cidrBlocks: ["0.0.0.0/0"] }]
});

const server = new aws.ec2.Instance("web", {
  ami: "ami-0c55b159cbfafe1f0",
  instanceType: "t3.micro",
  vpcSecurityGroupIds: [sg.id],
  tags: { Name: "web-server" }
});

export const publicIp = server.publicIp;