In order to produce a complete view of a customer, a customer service(CS) application requires...

In order to produce a complete view of a customer, a customer service(CS) application requires reference data from multiple external systems. The customer data resides on a customerinfo page in a parent case type. The data on the CustomerInfo Page is also used by some of its subcases. Sometimes, the connectors that populate the data page are slow.

Which two of the following approaches for handling the required reference data from the external systems uses the least system resources? (Choose Two.)