module with flatten function

module-flatten/ssm-parameter/ssm-parameter.tf

@@ -0,0 +1,18 @@
+locals {
+  parameters = flatten([ 
+    for parameters in var.parameters: [
+      for keyvalues in parameters.parameters:
+        {
+          "name" = "${parameters.prefix}/${keyvalues.name}"
+          "value" = keyvalues.value
+        }
+      ]
+    ])
+}
+
+resource "aws_ssm_parameter" "parameter" {
+  for_each = { for keyvalue in local.parameters: keyvalue.name => keyvalue.value }
+  name     = each.key
+  type     = "String"
+  value    = each.value
+}