Terraform Advanced — Multiple Providers in One Module

Use AWS, GCP, and Azure resources together.

---

Declaring Multiple Providers

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
    google = {
      source  = "hashicorp/google"
      version = "~> 5.0"
    }
    azurerm = {
      source  = "hashicorp/azurerm"
      version = "~> 3.0"
    }
  }
}

provider "aws" {
  region = "us-east-1"
}

provider "google" {
  project = "my-gcp-project"
  region  = "us-central1"
}

provider "azurerm" {
  features {}
}

---

Cross-Cloud DNS Example

# App runs on AWS
resource "aws_instance" "app" {
  ami           = "ami-0abcdef1234567890"
  instance_type = "t3.micro"
}

# DNS managed in GCP Cloud DNS
resource "google_dns_record_set" "app" {
  name         = "app.example.com."
  type         = "A"
  ttl          = 300
  managed_zone = "example-zone"
  rrdatas      = [aws_instance.app.public_ip]
}

💡 Production Tip: Keep multi-cloud in a single state only when resources are tightly coupled. Otherwise, separate states per cloud.

---

What’s Next?

Handle cross-provider dependencies.

← Provider Aliasing Cross-Provider Dependencies →