A better Module interaction pattern?

Questions & Help Questions
,
1

I’m looking to improve this pattern.
It is a pattern I use in a lot of my projects.

defmodule Handler do
    def handle_request(data) do
        response = apply(@some_module_from_config, :parse, [data])

        # do_something_with_response(response)
        ...
    end
end

I then have customer specific implementations of :parse in separate modules, for example

defmodule CustomerA do
    def parse(data) do
        # specific parsing of this data for Customer-A
    end
end

defmodule CustomerB do
    def parse(data) do
         # specific parsing of this data for Customer-B
    end
end

This works, but can it be improved?

Is there a benefit for example to have a @behaviour in Handler which defines :parse and other functions

Then each Customer module no implements use Handler

Please are their better patterns for doing this?

Thanks.