Approval process for custom Smart service plug-ins

Hi,

We are looking into creating a custom Smart service plug-in to serialize/deserialize using the AVRO Java libraries. We have seen that the code can be sent through the AppMarket Submissions Site for approval, but in the documentation page that details how to build this type of plug-ins it says the for Appian cloud customers it has to be tested in a licensed local installation of Appian.

"In order to individually build a custom smart service plug-in, a licensed local installation of Appian is required. Appian Cloud customers who have a local installation must develop and test the custom smart service locally and coordinate with Appian Technical Support to deploy it on their site."

If anyone know the steps that we must follow to get a custom Smart service plug-in reviewed and approved, or if anyone has already done this before and can tell us about the process it would be really helpful.

Thanks in advance