diff --git a/terraform/environements/dev/main.tf b/terraform/environements/dev/main.tf
deleted file mode 100644
index d68fc0f..0000000
--- a/terraform/environements/dev/main.tf
+++ /dev/null
@@ -1,42 +0,0 @@
-# Provider Google
-provider "google" {
-  project = var.project_id
-  region  = var.region
-  zone    = var.zone
-}
-
-# Module IAM
-module "iam" {
-  source     = "../../modules/iam"
-  project_id = var.project_id
-}
-
-# Module Compute
-module "compute" {
-  source              = "../../modules/compute"
-  instance_type       = var.instance_type
-  zone                = var.zone
-  frontend_subnet_id  = var.frontend_subnet_id
-  backend_subnet_id   = var.backend_subnet_id
-  database_subnet_id  = var.database_subnet_id
-}
-
-# Exemple de création d'un template pour Ansible
-data "template_file" "ansible_inventory" {
-  template = <<EOT
-[frontend]
-${module.compute.frontend_internal_ip} ansible_user=YOUR_SSH_USER
-
-[backend]
-${module.compute.backend_internal_ip} ansible_user=YOUR_SSH_USER
-
-[database]
-${module.compute.database_internal_ip} ansible_user=YOUR_SSH_USER
-EOT
-}
-
-# Optionnel : écrire le fichier sur le disque
-resource "local_file" "ansible_inventory" {
-  content  = data.template_file.ansible_inventory.rendered
-  filename = "${path.module}/inventory.ini"
-}
diff --git a/terraform/environements/dev/outputs.tf b/terraform/environements/dev/outputs.tf
deleted file mode 100644
index 9c930ea..0000000
--- a/terraform/environements/dev/outputs.tf
+++ /dev/null
@@ -1,35 +0,0 @@
-# Outputs du module Compute
-output "frontend_internal_ip" {
-  value = module.compute.frontend_internal_ip
-}
-
-output "backend_internal_ip" {
-  value = module.compute.backend_internal_ip
-}
-
-output "database_internal_ip" {
-  value = module.compute.database_internal_ip
-}
-
-output "frontend_public_ip" {
-  value = module.compute.frontend_public_ip
-}
-
-output "instance_names" {
-  value = module.compute.instance_names
-}
-
-# Outputs du module IAM
-output "service_account_email" {
-  value = module.iam.service_account_email
-}
-
-output "service_account_key" {
-  value     = module.iam.service_account_key
-  sensitive = true
-}
-
-# Output du fichier Ansible généré
-output "ansible_inventory_file" {
-  value = local_file.ansible_inventory.filename
-}
diff --git a/terraform/environements/dev/variables.tf b/terraform/environements/dev/variables.tf
deleted file mode 100644
index 6d262d9..0000000
--- a/terraform/environements/dev/variables.tf
+++ /dev/null
@@ -1,41 +0,0 @@
-# Variables pour le projet GCP
-variable "project_id" {
-  description = "ID du projet GCP"
-  type        = string
-  default     = "mon-projet-gcp-dev"
-}
-
-variable "region" {
-  description = "Région GCP"
-  type        = string
-  default     = "europe-west1"
-}
-
-variable "zone" {
-  description = "Zone GCP"
-  type        = string
-  default     = "europe-west1-b"
-}
-
-# Variables pour les subnets
-variable "frontend_subnet_id" {
-  description = "ID du subnet frontend"
-  type        = string
-}
-
-variable "backend_subnet_id" {
-  description = "ID du subnet backend"
-  type        = string
-}
-
-variable "database_subnet_id" {
-  description = "ID du subnet database"
-  type        = string
-}
-
-# Type d'instance par défaut
-variable "instance_type" {
-  description = "Type d'instance pour Compute"
-  type        = string
-  default     = "e2-medium"
-}
diff --git a/terraform/environments/dev/main.tf b/terraform/environments/dev/main.tf
new file mode 100644
index 0000000..ec8f309
--- /dev/null
+++ b/terraform/environments/dev/main.tf
@@ -0,0 +1,28 @@
+# À vous de :
+# 1. Configurer le provider google
+# 2. Appeler les trois modules avec les bonnes variables
+# 3. Créer le fichier de configuration Ansible (template)
+
+terraform {
+  required_providers {
+    google = {
+      source  = "hashicorp/google"
+      version = "~> 6.12.0"
+    }
+  }
+}
+
+provider "google" {
+  project = var.project_id
+  region  = var.region
+}
+
+module "network" {
+  source            = "../../modules/network"
+  project_name      = var.project_name
+  region           = var.region
+  frontend_cidr    = var.frontend_cidr
+  backend_cidr     = var.backend_cidr
+  database_cidr    = var.database_cidr
+  ssh_source_ranges = var.ssh_source_ranges
+}
\ No newline at end of file
diff --git a/terraform/environments/dev/outputs.tf b/terraform/environments/dev/outputs.tf
new file mode 100644
index 0000000..e69de29
diff --git a/terraform/environments/dev/variables.tf b/terraform/environments/dev/variables.tf
new file mode 100644
index 0000000..e0e7bef
--- /dev/null
+++ b/terraform/environments/dev/variables.tf
@@ -0,0 +1,43 @@
+# définissez toutes les variables nécessaires avec des valeurs par défaut appropriées.
+
+variable "project_name" {
+  description = "Nom du projet"
+  type        = string
+  default     = "My First Project"
+}
+
+variable "region" {
+  description = "Region du projet"
+  type        = string
+  default     = "europe-west9"
+}
+
+variable "frontend_cidr" {
+  description = "CIDR for frontend subnet"
+  type        = string
+  default     = "10.0.1.0/24"
+}
+
+variable "backend_cidr" {
+  description = "CIDR for backend subnet"
+  type        = string
+  default     = "10.0.2.0/24"
+}
+
+variable "database_cidr" {
+  description = "CIDR for database subnet"
+  type        = string
+  default     = "10.0.3.0/24"
+}
+
+variable "ssh_source_ranges" {
+  description = ""
+  type        = string
+  default     = "0.0.0.0/0"
+}
+
+variable "project_id" {
+  description = "ID du projet"
+  type        = string
+  default     = "glossy-handler-478713-i1"
+}
\ No newline at end of file
diff --git a/terraform/modules/compute/main.tf b/terraform/modules/compute/main.tf
index b509f30..a4f4814 100644
--- a/terraform/modules/compute/main.tf
+++ b/terraform/modules/compute/main.tf
@@ -1,71 +1,22 @@
-resource "google_compute_instance" "frontend" {
-  name         = "frontend"
-  machine_type = var.instance_type
-  zone         = var.zone
+# À vous de créer :
 
-  boot_disk {
-    initialize_params {
-      image = "debian-cloud/debian-11"
-      size  = 10
-    }
-  }
+# 1. Instance frontend :
+#    - Image : debian-11
+#    - Disque : 10GB
+#    - IP publique
+#    - Tags : frontend, ssh
+#    - OS Login enabled
 
-  network_interface {
-    subnetwork = var.frontend_subnet_id
-    access_config {} # IP publique
-  }
+# 2. Instance backend :
+#    - Image : debian-11
+#    - Disque : 10GB
+#    - Pas d'IP publique (interne seulement)
+#    - Tags : backend, ssh
+#    - OS Login enabled
 
-  metadata = {
-    enable-oslogin = "TRUE"
-  }
-
-  tags = ["frontend", "ssh"]
-}
-
-resource "google_compute_instance" "backend" {
-  name         = "backend"
-  machine_type = var.instance_type
-  zone         = var.zone
-
-  boot_disk {
-    initialize_params {
-      image = "debian-cloud/debian-11"
-      size  = 10
-    }
-  }
-
-  network_interface {
-    subnetwork = var.backend_subnet_id
-    # Pas d'IP publique
-  }
-
-  metadata = {
-    enable-oslogin = "TRUE"
-  }
-
-  tags = ["backend", "ssh"]
-}
-
-resource "google_compute_instance" "database" {
-  name         = "database"
-  machine_type = var.instance_type
-  zone         = var.zone
-
-  boot_disk {
-    initialize_params {
-      image = "debian-cloud/debian-11"
-      size  = 20
-    }
-  }
-
-  network_interface {
-    subnetwork = var.database_subnet_id
-    # Pas d'IP publique
-  }
-
-  metadata = {
-    enable-oslogin = "TRUE"
-  }
-
-  tags = ["database", "ssh"]
-}
+# 3. Instance database :
+#    - Image : debian-11
+#    - Disque : 20GB
+#    - Pas d'IP publique
+#    - Tags : database, ssh
+#    - OS Login enabled
\ No newline at end of file
diff --git a/terraform/modules/compute/outputs.tf b/terraform/modules/compute/outputs.tf
index 87b3120..4a91aa9 100644
--- a/terraform/modules/compute/outputs.tf
+++ b/terraform/modules/compute/outputs.tf
@@ -1,23 +1,4 @@
-output "frontend_internal_ip" {
-  value = google_compute_instance.frontend.network_interface[0].network_ip
-}
-
-output "backend_internal_ip" {
-  value = google_compute_instance.backend.network_interface[0].network_ip
-}
-
-output "database_internal_ip" {
-  value = google_compute_instance.database.network_interface[0].network_ip
-}
-
-output "frontend_public_ip" {
-  value = google_compute_instance.frontend.network_interface[0].access_config[0].nat_ip
-}
-
-output "instance_names" {
-  value = [
-    google_compute_instance.frontend.name,
-    google_compute_instance.backend.name,
-    google_compute_instance.database.name
-  ]
-}
+# À vous d'exposer :
+# 1. Les IPs internes de toutes les instances
+# 2. L'IP publique du frontend
+# 3. Les noms des instances
\ No newline at end of file
diff --git a/terraform/modules/compute/variables.tf b/terraform/modules/compute/variables.tf
index 093631e..76a14cc 100644
--- a/terraform/modules/compute/variables.tf
+++ b/terraform/modules/compute/variables.tf
@@ -1,26 +1,6 @@
-variable "instance_type" {
-  description = "Type de machine pour les instances"
-  type        = string
-  default     = "e2-medium"
-}
-
-variable "zone" {
-  description = "Zone où seront déployées les instances"
-  type        = string
-  default     = "europe-west1-b"
-}
-
-variable "frontend_subnet_id" {
-  description = "ID du subnet pour le frontend"
-  type        = string
-}
-
-variable "backend_subnet_id" {
-  description = "ID du subnet pour le backend"
-  type        = string
-}
-
-variable "database_subnet_id" {
-  description = "ID du subnet pour la base de données"
-  type        = string
-}
+# À vous de définir les variables pour :
+# - instance_type
+# - zone
+# - frontend_subnet_id
+# - backend_subnet_id
+# - database_subnet_id
\ No newline at end of file
diff --git a/terraform/modules/iam/main.tf b/terraform/modules/iam/main.tf
index d3f4109..a4b77c1 100644
--- a/terraform/modules/iam/main.tf
+++ b/terraform/modules/iam/main.tf
@@ -1,42 +1,5 @@
-# Création du compte de service Terraform
-resource "google_service_account" "terraform" {
-  account_id   = "terraform-sa"
-  display_name = "Terraform Service Account"
-  project      = var.project_id
-}
-
-# Création de la clé pour le compte de service
-resource "google_service_account_key" "terraform_key" {
-  service_account_id = google_service_account.terraform.name
-  keepers = {
-    # Permet de régénérer la clé si besoin
-    project = var.project_id
-  }
-}
-
-# Attribution de rôles IAM
-# Exemples de rôles pour pouvoir gérer Compute, IAM et OS Login
-resource "google_project_iam_member" "compute_admin" {
-  project = var.project_id
-  role    = "roles/compute.admin"
-  member  = "serviceAccount:${google_service_account.terraform.email}"
-}
-
-resource "google_project_iam_member" "iam_admin" {
-  project = var.project_id
-  role    = "roles/iam.serviceAccountAdmin"
-  member  = "serviceAccount:${google_service_account.terraform.email}"
-}
-
-resource "google_project_iam_member" "oslogin" {
-  project = var.project_id
-  role    = "roles/compute.osLogin"
-  member  = "serviceAccount:${google_service_account.terraform.email}"
-}
-
-# Configuration d'OS Login avec clé SSH
-resource "google_compute_project_metadata_item" "enable_oslogin" {
-  project = var.project_id
-  key     = "enable-oslogin"
-  value   = "TRUE"
-}
+# À vous de créer :
+# 1. Un compte de service pour Terraform
+# 2. Une clé pour ce compte de service
+# 3. Les rôles IAM nécessaires
+# 4. La configuration OS Login avec votre clé SSH
\ No newline at end of file
diff --git a/terraform/modules/iam/outputs.tf b/terraform/modules/iam/outputs.tf
index cb84714..c73acc0 100644
--- a/terraform/modules/iam/outputs.tf
+++ b/terraform/modules/iam/outputs.tf
@@ -1,8 +1,3 @@
-output "service_account_email" {
-  value = google_service_account.terraform.email
-}
-
-output "service_account_key" {
-  value     = google_service_account_key.terraform_key.private_key
-  sensitive = true
-}
+# À vous d'exposer :
+# 1. L'email du compte de service
+# 2. La clé du compte de service (sensitive = true)
\ No newline at end of file
diff --git a/terraform/modules/iam/variables.tf b/terraform/modules/iam/variables.tf
index 0a61850..5ac1614 100644
--- a/terraform/modules/iam/variables.tf
+++ b/terraform/modules/iam/variables.tf
@@ -1,4 +1,2 @@
-variable "project_id" {
-  description = "ID du projet GCP"
-  type        = string
-}
+# À vous de définir :
+# - project_id (string)
\ No newline at end of file
diff --git a/terraform/modules/network/main.tf b/terraform/modules/network/main.tf
index b9438b1..25062bd 100644
--- a/terraform/modules/network/main.tf
+++ b/terraform/modules/network/main.tf
@@ -1,37 +1,43 @@
-provider "google" {
-  project = var.project_name
-  region  = var.region
-}
+# À vous de créer :
+# 1. Un VPC personnalisé avec auto_create_subnetworks = false
+# 2. Trois sous-réseaux (frontend, backend, database)
+# 3. Règles de firewall :
+#    - HTTP/HTTPS vers frontend
+#    - SSH vers toutes les instances
+#    - Port 8000 de frontend vers backend
+#    - Port 3306 de backend vers database
 
-resource "google_compute_network" "custom_vpc" {
-  name                    = "${var.project_name}-vpc"
+# VPC
+resource "google_compute_network" "vpc_terraform" {
+  name                    = "vpc-terraform"
   auto_create_subnetworks = false
 }
 
-resource "google_compute_subnetwork" "frontend" {
-  name          = "${var.project_name}-frontend-subnet"
+# Sous-réseau
+resource "google_compute_subnetwork" "subnet_frontend" {
+  name          = "frontend"
+  network       = google_compute_network.vpc_terraform.id
   ip_cidr_range = var.frontend_cidr
-  network       = google_compute_network.custom_vpc.id
   region        = var.region
 }
 
-resource "google_compute_subnetwork" "backend" {
-  name          = "${var.project_name}-backend-subnet"
+resource "google_compute_subnetwork" "subnet_backend" {
+  name          = "backend"
+  network       = google_compute_network.vpc_terraform.id
   ip_cidr_range = var.backend_cidr
-  network       = google_compute_network.custom_vpc.id
   region        = var.region
 }
 
-resource "google_compute_subnetwork" "database" {
-  name          = "${var.project_name}-database-subnet"
+resource "google_compute_subnetwork" "subnet_database" {
+  name          = "database"
+  network       = google_compute_network.vpc_terraform.id
   ip_cidr_range = var.database_cidr
-  network       = google_compute_network.custom_vpc.id
   region        = var.region
 }
 
-resource "google_compute_firewall" "frontend_http_https" {
-  name    = "${var.project_name}-frontend-http-https"
-  network = google_compute_network.custom_vpc.id
+resource "google_compute_firewall" "allow_user_frontend" {
+  name    = "allow-user-frontend"
+  network = google_compute_network.vpc_terraform.id
 
   allow {
     protocol = "tcp"
@@ -42,21 +48,9 @@ resource "google_compute_firewall" "frontend_http_https" {
   target_tags   = ["frontend"]
 }
 
-resource "google_compute_firewall" "ssh" {
-  name    = "${var.project_name}-ssh"
-  network = google_compute_network.custom_vpc.id
-
-  allow {
-    protocol = "tcp"
-    ports    = ["22"]
-  }
-
-  source_ranges = [var.ssh_source_ranges]
-}
-
-resource "google_compute_firewall" "frontend_to_backend" {
-  name    = "${var.project_name}-frontend-to-backend"
-  network = google_compute_network.custom_vpc.id
+resource "google_compute_firewall" "allow_frontend_backend" {
+  name    = "allow-frontend-backend"
+  network = google_compute_network.vpc_terraform.id
 
   allow {
     protocol = "tcp"
@@ -64,12 +58,25 @@ resource "google_compute_firewall" "frontend_to_backend" {
   }
 
   source_tags = ["frontend"]
-  target_tags = ["backend"]
+  target_tags   = ["backend"]
 }
 
-resource "google_compute_firewall" "backend_to_database" {
-  name    = "${var.project_name}-backend-to-database"
-  network = google_compute_network.custom_vpc.id
+resource "google_compute_firewall" "allow_ssh_all" {
+  name    = "allow-ssh-all"
+  network = google_compute_network.vpc_terraform.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["22"]
+  }
+
+  source_ranges = ["0.0.0.0/0"]
+  target_tags   = ["ssh"]
+}
+
+resource "google_compute_firewall" "allow_backend_database" {
+  name    = "allow-backend-database"
+  network = google_compute_network.vpc_terraform.id
 
   allow {
     protocol = "tcp"
@@ -77,5 +84,5 @@ resource "google_compute_firewall" "backend_to_database" {
   }
 
   source_tags = ["backend"]
-  target_tags = ["database"]
-}
+  target_tags   = ["database"]
+}
\ No newline at end of file
diff --git a/terraform/modules/network/outputs.tf b/terraform/modules/network/outputs.tf
index 464c0c1..078bc94 100644
--- a/terraform/modules/network/outputs.tf
+++ b/terraform/modules/network/outputs.tf
@@ -1,13 +1,15 @@
-output "vpc_id" {
-  description = "ID du VPC créé"
-  value       = google_compute_network.custom_vpc.id
+# À vous d'exposer :
+# 1. L'ID du VPC
+# 2. Les IDs des sous-réseaux sous forme de map
+
+output "vpc_terraform_output" {
+  value = google_compute_network.vpc_terraform.id
 }
 
-output "subnet_ids" {
-  description = "IDs des sous-réseaux"
-  value = {
-    frontend = google_compute_subnetwork.frontend.id
-    backend  = google_compute_subnetwork.backend.id
-    database = google_compute_subnetwork.database.id
-  }
-}
+output "list_id" {
+    value = {
+        frontend = google_compute_subnetwork.subnet_frontend.id
+        backend = google_compute_subnetwork.subnet_backend.id
+        database = google_compute_subnetwork.subnet_database.id
+    }
+}
\ No newline at end of file
diff --git a/terraform/modules/network/variables.tf b/terraform/modules/network/variables.tf
index 04ed796..36786d4 100644
--- a/terraform/modules/network/variables.tf
+++ b/terraform/modules/network/variables.tf
@@ -1,33 +1,37 @@
+# À vous de définir les variables pour :
+# - project_name (string)
+# - region (string)
+# - frontend_cidr (string)
+# - backend_cidr (string)
+# - database_cidr (string)
+# - ssh_source_ranges (string)
+
 variable "project_name" {
-  description = "Nom du projet GCP"
+  description = "Nom du projet"
   type        = string
 }
 
 variable "region" {
-  description = "Région pour le VPC et les sous-réseaux"
-  type        = string
-}
-
-
-variable "ssh_source_ranges" {
-  description = "Plages IP autorisées pour SSH"
+  description = "Region du projet"
   type        = string
 }
 
 variable "frontend_cidr" {
   description = "CIDR for frontend subnet"
   type        = string
-  default     = "10.0.1.0/24"
 }
 
 variable "backend_cidr" {
   description = "CIDR for backend subnet"
   type        = string
-  default     = "10.0.2.0/24"
 }
 
 variable "database_cidr" {
   description = "CIDR for database subnet"
   type        = string
-  default     = "10.0.3.0/24"
 }
+
+variable "ssh_source_ranges" {
+  description = ""
+  type        = string
+}
\ No newline at end of file