A large enterprise customer operating in a high regulated industry is planning to implement Salesforce for customer facing associates in both Sales and Service, and back office staff. The business processes that Salesforce supports are critical to the business.
Salesforce will be integrated to multiple back office systems to provide a single interface for associates. Reliability and monitoring of these integrations is required as associates support customers.
Which integration solution should the architect consider when planning the implementation?

• A.Architect Services in back office systems to support callouts from Salesforce and build reliability, monitoring and reporting capabilities.
• B.Decouple back office system callouts into separate distinct services that have inbuilt error logging and monitoring frameworks.
• C.Leverage Middleware for all back office system integrations ensuring real time alerting, monitoring and reporting capabilities.
• D.Build a custom integration gateway to support back office system integrations and ensure reliability and monitoring capabilities.

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A company's cloud-based single page application consolidates data local to the application with data from on premise and 3rd party systems. The diagram below typifies the application's combined use of synchronous and asynchronous calls.

The company wants to use the average response time of its application's user interface as a basis for certain alerts. For this purpose, the following occurs:
1. Log every call's start and finish date and time to a central analytics data store.
2. Compute response time uniformly as the difference between the start and finish date and time - A to H in the diagram.
Which computation represents the end-to-end response time from the user's perspective?

• A.Sum of A, G, and H
• B.Sum of A to H
• C.Sum of A to F
• D.Sum of A and H

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