Protobuf serializes structured data into a binary format for maximum efficiency/performance. OpenDDL seems to be focused on a text-based format that is human-r

Protobuf serializes structured data into a binary format for maximum efficiency/performance. OpenDDL seems to be focused on a text-based format that is human-readable and editable. They seem similar in that they both provide a means to model data using a type system, but different in that one is focused on efficiency/performance while the other is focused on interoperable but readable/editable data.