4.
An energy company has field workers who schedule installation jobs for heaters. This company uses finance and operations apps for the back office and other software as a service (SaaS) to schedule appointments. When field workers schedule appointments, they must look up inventory availability to make sure that installation parts are available for the job. The real-time data is required. Peak data volume is 1,000 records per hour and the frequency is Ad hoc. Which one of the following integration patterns should you use?