terraform using different providers

 We can easily setup our terraform to support different providers. This is useful when we like to setup our resources using different subscription. 

modules/storage/main.tf

resource "azurerm_storage_account" "old_storage" {

  name                     = var.storage_name

  resource_group_name      = "mytest-kv-rg"

  location                 = "australiaeast"

  account_tier             = "Standard"

  account_replication_type = "LRS"

}

variable "storage_name" {

  type = string

}

And then we have this as our main.tf 

# The default provider (Implicitly used if no provider is specified)

provider "azurerm" {

  features {}

  subscription_id = "aaaaaaaaaaaaaaaaaaaaa" # Subscription A

}

# The aliased provider

provider "azurerm" {

  alias           = "secondary"

  features {}

  subscription_id = "bbbbbbbbbbbbbbbbbbb" # Subscription B

}

module "primary-storage" {

  source       = "./modules/storage"

  providers    = { azurerm = azurerm }

  storage_name = "primarystorage2026jw"

}

module "secondary-storage" {

  source       = "./modules/storage"

  providers    = { azurerm = azurerm.secondary }

  storage_name = "secondarystorage2026jw"

}

That is all we need if we wanted to use different providers to setup our resources. Notice we did not declare additional provider block. This is cater for scenario where we assume all deployment goes to single subscriptions.