What are two benefits of canvas that an Integration Architect should consider when exposing external systems from within Salesforce?
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A company has an external system that processes and tracks orders. Sales reps manage their leads and opportunity pipeline in Salesforce. In the current state, the two systems are disconnected and processing orders requires a lot of manual entry on sales rep part. This creates delays in processing orders and incomplete data due to manual entry.
As a part of modernization efforts the company decided to integrate Salesforce and the order management system. The following technical requirements were identified:
1. Orders need to be created in real time from salesforce
2. Minimal customization*, and code should be written due to a tight timeline and lack of developer resources
3. Sales reps need to be able to see order history and be able to see most up to date information on current order status.
4. Managers need to be able to run reports in Salesforce to see daily and monthly order volumes and fulfillment timelines.
5. The legacy system is hosted on premise and is currently connected to the Enterprise Service Bus (ESB). The ESB is flexible enough to provide any methods and connection types needed by salesforce team.
6. There are 1000 sales reps. Each user processes/creates on average 15 orders per shift. Most of the orders contain 20-30 line items.
How should an integration architect integrate the two systems based on the technical requirements and system constraints?

Universal containers built an integration using the Bulk API to load records from a legacy system into Salesforce, Parallel option with batch size 1000 was used However, the batches often fail due to " Max CPU time exceeded"errors which could be resolved with a Similar batch size.
What are two risks involved with batch sizes that are too small?
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An Architect is asked to build a solution that allows a service to access Salesforce through the API. What is the first thing the Architect should do?

An Architect is required to integrate with an External Data Source via a Named Credential with an Apex callout due to technical constraints.
How is authentication achieved?