diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..83f6e39
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+credentials.json
diff --git a/modules/compute_engine_instance_group/main.tf b/modules/compute_engine_instance_group/main.tf
index e69de29..db4fd41 100644
--- a/modules/compute_engine_instance_group/main.tf
+++ b/modules/compute_engine_instance_group/main.tf
@@ -0,0 +1,9 @@
+resource "google_compute_instance_group_manager" "instance_group" {
+  name        = "instance-group"
+  project     = var.project_id
+  region      = var.region
+  base_instance_name = "instance"
+  instance_template = var.template_self_link
+  target_size  = 2
+}
+
diff --git a/modules/compute_engine_instance_group/outputs.tf b/modules/compute_engine_instance_group/outputs.tf
index e69de29..c8b559c 100644
--- a/modules/compute_engine_instance_group/outputs.tf
+++ b/modules/compute_engine_instance_group/outputs.tf
@@ -0,0 +1,3 @@
+output "self_link" {
+  value = google_compute_instance_group_manager.instance_group.instance_group
+}
diff --git a/modules/compute_engine_instance_group/variables.tf b/modules/compute_engine_instance_group/variables.tf
index e69de29..2cd7aa7 100644
--- a/modules/compute_engine_instance_group/variables.tf
+++ b/modules/compute_engine_instance_group/variables.tf
@@ -0,0 +1,3 @@
+variable "project_id" {}
+variable "region" {}
+variable "template_self_link" {}
diff --git a/modules/compute_engine_template/main.tf b/modules/compute_engine_template/main.tf
index e69de29..fb3df4c 100644
--- a/modules/compute_engine_template/main.tf
+++ b/modules/compute_engine_template/main.tf
@@ -0,0 +1,25 @@
+resource "google_compute_instance_template" "template" {
+  name_prefix  = "instance-template-"
+  project      = var.project_id
+  region       = var.region
+
+  machine_type = var.instance_type
+  disk {
+    source_image = var.image_name
+    auto_delete  = true
+    boot         = true
+  }
+
+  network_interface {
+    network = "default"
+    access_config {
+      // Ephemeral public IP address
+    }
+  }
+
+  metadata_startup_script = var.startup_script
+
+  lifecycle {
+    create_before_destroy = true
+  }
+}
\ No newline at end of file
diff --git a/modules/compute_engine_template/variables.tf b/modules/compute_engine_template/variables.tf
index e69de29..712b91d 100644
--- a/modules/compute_engine_template/variables.tf
+++ b/modules/compute_engine_template/variables.tf
@@ -0,0 +1,5 @@
+variable "project_id" {}
+variable "region" {}
+variable "image_name" {}
+variable "instance_type" {}
+variable "startup_script" {}
diff --git a/modules/load_balancer/main.tf b/modules/load_balancer/main.tf
index e69de29..6c43620 100644
--- a/modules/load_balancer/main.tf
+++ b/modules/load_balancer/main.tf
@@ -0,0 +1,46 @@
+resource "google_compute_backend_service" "backend_service" {
+  name        = "backend-service"
+  project     = var.project_id
+  region      = var.region
+
+  backend {
+    group = var.backend_instance_group_self_link
+  }
+
+  health_checks = [google_compute_health_check.default_http.self_link]
+}
+
+resource "google_compute_health_check" "default_http" {
+  name        = "default-http-health-check"
+  project     = var.project_id
+  check_interval_sec = 30
+  timeout_sec       = 5
+  http_health_check {
+    port = 80
+  }
+}
+
+resource "google_compute_url_map" "url_map" {
+  name        = "url-map"
+  project     = var.project_id
+  default_service = google_compute_backend_service.backend_service.self_link
+}
+
+resource "google_compute_target_http_proxy" "http_proxy" {
+  name        = "http-proxy"
+  project     = var.project_id
+  url_map     = google_compute_url_map.url_map.self_link
+}
+
+resource "google_compute_global_forwarding_rule" "forwarding_rule" {
+  name        = "forwarding-rule"
+  project     = var.project_id
+  target      = google_compute_target_http_proxy.http_proxy.self_link
+  port_range  = "80"
+  ip_address  = google_compute_global_address.lb_address.address
+}
+
+resource "google_compute_global_address" "lb_address" {
+  name    = "lb-address"
+  project = var.project_id
+}
diff --git a/terraform.tfvars b/terraform.tfvars
index df4cc7a..340aa5a 100644
--- a/terraform.tfvars
+++ b/terraform.tfvars
@@ -1,4 +1,4 @@
-credentials_file = "path/to/credentials.json"
+credentials_file = "credentials.json"
 project_id       = "terraform-demo-382210"
 region           = "us-central1"
 zone             = "us-central1-a"