diff --git a/src/domains/citizen-auth-app/04_fims.tf b/src/domains/citizen-auth-app/04_fims.tf
index 32644128c..5d2890f91 100644
--- a/src/domains/citizen-auth-app/04_fims.tf
+++ b/src/domains/citizen-auth-app/04_fims.tf
@@ -74,11 +74,16 @@ locals {
   }
 }
 
-module "fims_snet" {
+data "azurerm_nat_gateway" "nat_gateway" {
+  name                = "io-p-natgw"
+  resource_group_name = "io-p-rg-common"
+}
+
+module "fims_plus_snet" {
   count                                     = var.fims_enabled ? 1 : 0
   source                                    = "git::https://github.com/pagopa/terraform-azurerm-v3.git//subnet?ref=v4.1.15"
-  name                                      = "fims"
-  address_prefixes                          = var.cidr_subnet_fims
+  name                                      = "fims-plus"
+  address_prefixes                          = var.cidr_subnet_fims_plus
   resource_group_name                       = data.azurerm_virtual_network.vnet_common.resource_group_name
   virtual_network_name                      = data.azurerm_virtual_network.vnet_common.name
   private_endpoint_network_policies_enabled = true
@@ -96,17 +101,14 @@ module "fims_snet" {
   }
 }
 
-data "azurerm_nat_gateway" "nat_gateway" {
-  name                = "io-p-natgw"
-  resource_group_name = "io-p-rg-common"
-}
-
-resource "azurerm_subnet_nat_gateway_association" "fims_snet" {
+resource "azurerm_subnet_nat_gateway_association" "fims_plus_snet" {
   count          = var.fims_enabled ? 1 : 0
   nat_gateway_id = data.azurerm_nat_gateway.nat_gateway.id
-  subnet_id      = module.fims_snet[0].id
+  subnet_id      = module.fims_plus_snet[0].id
 }
 
+
+
 module "appservice_fims_plus" {
   count  = var.fims_enabled ? 1 : 0
   source = "git::https://github.com/pagopa/terraform-azurerm-v3.git//app_service?ref=v4.1.15"
@@ -141,7 +143,7 @@ module "appservice_fims_plus" {
     [],
   )
 
-  subnet_id        = module.fims_snet[0].id
+  subnet_id        = module.fims_plus_snet[0].id
   vnet_integration = true
 
   tags = var.tags
@@ -179,7 +181,7 @@ module "appservice_fims_plus_slot_staging" {
     [],
   )
 
-  subnet_id        = module.fims_snet[0].id
+  subnet_id        = module.fims_plus_snet[0].id
   vnet_integration = true
 
   tags = var.tags
@@ -332,6 +334,34 @@ resource "azurerm_monitor_metric_alert" "too_many_http_5xx" {
 # OLD FIMS TO REMOVE #
 ######################
 
+module "fims_snet" {
+  count                                     = var.fims_enabled ? 1 : 0
+  source                                    = "git::https://github.com/pagopa/terraform-azurerm-v3.git//subnet?ref=v4.1.15"
+  name                                      = "fims"
+  address_prefixes                          = var.cidr_subnet_fims
+  resource_group_name                       = data.azurerm_virtual_network.vnet_common.resource_group_name
+  virtual_network_name                      = data.azurerm_virtual_network.vnet_common.name
+  private_endpoint_network_policies_enabled = true
+
+  service_endpoints = [
+    "Microsoft.Web",
+  ]
+
+  delegation = {
+    name = "default"
+    service_delegation = {
+      name    = "Microsoft.Web/serverFarms"
+      actions = ["Microsoft.Network/virtualNetworks/subnets/action"]
+    }
+  }
+}
+
+resource "azurerm_subnet_nat_gateway_association" "fims_snet" {
+  count          = var.fims_enabled ? 1 : 0
+  nat_gateway_id = data.azurerm_nat_gateway.nat_gateway.id
+  subnet_id      = module.fims_snet[0].id
+}
+
 module "appservice_fims" {
   count  = var.fims_enabled ? 1 : 0
   source = "git::https://github.com/pagopa/terraform-azurerm-v3.git//app_service?ref=v4.1.15"
diff --git a/src/domains/citizen-auth-app/99_variables.tf b/src/domains/citizen-auth-app/99_variables.tf
index 9c4a994e1..8ac1cfa01 100644
--- a/src/domains/citizen-auth-app/99_variables.tf
+++ b/src/domains/citizen-auth-app/99_variables.tf
@@ -229,6 +229,11 @@ variable "cidr_subnet_fims" {
   description = "App service FIMS address space."
 }
 
+variable "cidr_subnet_fims_plus" {
+  type        = list(string)
+  description = "App service FIMS+ address space."
+}
+
 variable "fims_plan_sku_tier" {
   type        = string
   description = "App service plan sku tier"
diff --git a/src/domains/citizen-auth-app/env/weu-prod01/terraform.tfvars b/src/domains/citizen-auth-app/env/weu-prod01/terraform.tfvars
index 660e8d2ec..74a321750 100644
--- a/src/domains/citizen-auth-app/env/weu-prod01/terraform.tfvars
+++ b/src/domains/citizen-auth-app/env/weu-prod01/terraform.tfvars
@@ -65,8 +65,9 @@ function_fastlogin_autoscale_default = 10
 
 # FIMS App Service
 cidr_subnet_fims       = ["10.0.18.0/26"]
+cidr_subnet_fims_plus  = ["10.0.18.64/26"]
 fims_plan_sku_tier     = "PremiumV3"
 fims_plan_sku_size     = "P1v3"
 fims_autoscale_minimum = 1
 fims_autoscale_maximum = 3
-fims_autoscale_default = 1
\ No newline at end of file
+fims_autoscale_default = 1