SFMC Universe Blog : What is Difference Between Synchronized and Salesforce Data Extension ?

Synchronized Data Extensions: Synchronized Data Extensions in SFMC serve as a bridge that facilitates the integration of data between Salesforce CRM and SFMC. These data extensions are established using a synchronized data source within the Marketing Cloud Connect framework. By configuring the required synchronization settings, valuable customer data from Salesforce CRM is efficiently replicated in the synchronized data extensions.

Salesforce Data Extensions: On the other hand, Salesforce Data Extensions within SFMC serve as repositories for storing data primarily acquired and managed within the Marketing Cloud. These data extensions are created directly in SFMC and provide marketers with a flexible environment to organize and manipulate data specific to their campaigns.

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