diff --git a/terraform-modules/aws/mongodb-atlas-users/main.tf b/terraform-modules/aws/mongodb-atlas-users/main.tf
index 00872d4af..fecf2e600 100644
--- a/terraform-modules/aws/mongodb-atlas-users/main.tf
+++ b/terraform-modules/aws/mongodb-atlas-users/main.tf
@@ -21,7 +21,7 @@ resource "mongodbatlas_database_user" "admin" {
 }
 
 resource "mongodbatlas_database_user" "test" {
-  username           = var.iam_role_name
+  username           = aws_iam_role.this.arn
   project_id         = var.mongodbatlas_projectid
   auth_database_name = "$external"
   aws_iam_type       = "ROLE"
@@ -72,3 +72,30 @@ resource "aws_secretsmanager_secret_version" "this" {
   secret_id     = aws_secretsmanager_secret.this[0].id
   secret_string = random_password.password[0].result
 }
+
+################################################
+# AWS role
+#
+# Using Mongo Atlas IAM authentication.  This would be the role that is given access to the databases.
+################################################
+data "aws_caller_identity" "current" {}
+
+resource "aws_iam_role" "this" {
+  name = "mongo-atlas-${var.cluster_name}"
+
+  assume_role_policy = jsonencode({
+    Version = "2012-10-17"
+    Statement = [
+      {
+        "Effect": "Allow",
+        "Principal": {
+          "AWS": data.aws_caller_identity.current.account_id
+        },
+        "Action": "sts:AssumeRole",
+        "Condition": {}
+      }
+    ]
+  })
+
+  tags = var.tags
+}
diff --git a/terraform-modules/aws/mongodb-atlas-users/variables.tf b/terraform-modules/aws/mongodb-atlas-users/variables.tf
index c4b5ece67..e52d68915 100644
--- a/terraform-modules/aws/mongodb-atlas-users/variables.tf
+++ b/terraform-modules/aws/mongodb-atlas-users/variables.tf
@@ -32,12 +32,6 @@ variable "recovery_window_in_days" {
   default     = 0
 }
 
-variable "iam_role_name" {
-  type        = string
-  description = "The IAM Role name to assign an auth user to the DB"
-  default     = null
-}
-
 variable "user_password" {
   type        = string
   description = "The password for the user"