Universal containers has decided that acquisition of other companies will be a key focus of their growth for the next several years. all acquired customer service agents will use uc's pre-existing customer support process built in salesforce. the erp application at any acquired company will not be immediately replaced, and customer service agents must be able to see up-to-date order status from all erp systems. what recommendation should a technical architect make to minimize complexity during new acquisitions?
a. build all integrations as nightly etl batches to minimize real-time overhead
b. leverage apex callouts to integrate directly with acquired applications
c. use an esb to abstract the salesforce integration from other enterprise applications
d. use custom links to direct users to the appropriate erp system to view order status