diff --git a/tp-cloud/terraform/modules/compute/main.tf b/tp-cloud/terraform/modules/compute/main.tf
index fff5590..b8d3800 100644
--- a/tp-cloud/terraform/modules/compute/main.tf
+++ b/tp-cloud/terraform/modules/compute/main.tf
@@ -3,8 +3,8 @@
 
 resource "google_compute_instance" "frontend_vm" {
   name         = "frontend-vm"
-  machine_type = "e2-medium"
-  zone         = "europe-west1-b"
+  machine_type = var.instance_type
+  zone         = var.zone
 
   boot_disk {
     initialize_params {
@@ -14,8 +14,9 @@ resource "google_compute_instance" "frontend_vm" {
   }
 
   network_interface {
+    subnetwork = var.frontend_subnet_id
+
     access_config {} # IP publique
-    subnetwork = google_compute_network.vpc.id
   }
 
   tags = ["frontend", "ssh"]
@@ -29,8 +30,8 @@ resource "google_compute_instance" "frontend_vm" {
 
 resource "google_compute_instance" "backend_vm" {
   name         = "backend-vm"
-  machine_type = "e2-medium"
-  zone         = "europe-west1-b"
+  machine_type = var.instance_type
+  zone         = var.zone
 
   boot_disk {
     initialize_params {
@@ -40,8 +41,7 @@ resource "google_compute_instance" "backend_vm" {
   }
 
   network_interface {
-
-    subnetwork = google_compute_network.vpc.id
+    subnetwork = var.backend_subnet_id
   }
 
   tags = ["backend", "ssh"]
@@ -56,8 +56,8 @@ resource "google_compute_instance" "backend_vm" {
 
 resource "google_compute_instance" "database_vm" {
   name         = "database-vm"
-  machine_type = "e2-medium"
-  zone         = "europe-west1-b"
+  machine_type = var.instance_type
+  zone         = var.zone
 
   boot_disk {
     initialize_params {
@@ -67,8 +67,7 @@ resource "google_compute_instance" "database_vm" {
   }
 
   network_interface {
-
-    subnetwork = google_compute_network.vpc.id
+    subnetwork = var.database_subnet_id
   }
 
   tags = ["database", "ssh"]
@@ -76,5 +75,4 @@ resource "google_compute_instance" "database_vm" {
   metadata = {
     enable-oslogin = "TRUE"
   }
-}
-
+}
\ No newline at end of file