Most scenarios, it needs to be fetch the data from DE. You can achieve this using SSJS or AMPScript in Salesforce Marketing Cloud.
In Salesforce Marketing Cloud, most of the time we need to retrieve the Publication Lists associated to the Subscriber. Please find below SSJS code snippet for same. UI FORM SECTION PROCESSING PAGE SECTION :
Welcome to CRM world. This is my first post. Purpose of this blog is to spread the knowledge about the technical or functional knowledge about the CRM and tool.