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The primary benefit of using external objects in Salesforce is that they allow users to interact with data stored outside of Salesforce. External objects are similar to custom objects but are specifically designed to reference data that resides in an external data source. This feature enables organizations to maintain their data in its original location, which can help reduce data redundancy and ensure that users always access the most up-to-date information.
By integrating external objects, users can perform operations such as querying, reporting, and visualizing data just as they would with standard Salesforce objects, without the need to duplicate the data within Salesforce. This capability is particularly beneficial for organizations that want to leverage existing data systems, such as ERP or databases, without the overhead of data migration and management.
In contrast, other options present limitations or misconceptions about external objects. For example, external objects do not require a copy of the data to be stored in Salesforce, which contradicts the primary advantage of efficiently accessing external data sources. They also do not directly increase data storage limits within Salesforce, nor do they inherently simplify lookup relationships, as these concerns pertain to the nature of data management rather than the external object functionality itself.