When you process records in real time, the records created or updated in Salesforce are upserted to Customer 360 instantaneously. When you create a record in Salesforce, the Cloud Application Integration process triggers a workflow to upsert the record to Customer 360.
After you process the records in Customer 360, you can export the updated records from Customer 360 to Salesforce in batches.
The following image shows how you can synchronize the records in real time: