diff --git a/services/terraform/self-host/variables.tf b/services/terraform/self-host/variables.tf
--- a/services/terraform/self-host/variables.tf
+++ b/services/terraform/self-host/variables.tf
@@ -57,3 +57,9 @@
   type        = string
   default     = "https://identity.commtechnologies.org:50054"
 }
+
+variable "db_instance_class" {
+  description = "The instance class for the MariaDB RDS instance"
+  type        = string
+  default     = "db.t4g.medium"
+}