Synchronised Data Extension Vs Data Extension Data extension Data extension is like a table with different columns that can hold data in rows. You could use this data extension to store Subscriber information or related information that will be used for sending emails. You have to mark it as Sendable in order to send emails from Data extensions. Syncrhonized Data extension This data extension is mainly used to populate Salesforce Standard/custom object data from Sales cloud/service cloud into Marketing cloud. We should integrate Salescloud with Marketing cloud using Marketing cloud connect before creating Syncrhonized Data extension. Salesforce Data Extensions in Marketing Cloud Connect A data extension is a table that contains your data. With Marketing Cloud Connect, push tracking data from the Marketing Cloud back to your Sales or Service Cloud orgs using Salesforce data extensions (SFDEs). Push any tracking data for emails sent to SFDE audiences using Marketing Cloud Sal...