What is the first thing an Integration Architect should validate if a callout from a Lightning Web Component to an external endpoint is failing?

A retail company wants to integrate Salesforce with their existing inventory management system. They require granular access controls for their staff, with access varying based on role, location, and type of data. As a Salesforce Certified Integration Architect, what would be crucial to evaluate?

A financial services company plans to integrate Salesforce with its existing banking software. The business requires secure access for both internal employees and external partners, each with different levels of permissions. As a Salesforce Certified Integration Architect, what aspect should you primarily evaluate in the current system landscape?

An insurance company is planning to integrate Salesforce with their existing claim management system. The business requirement is to ensure that only authorized claim officers have access to the claim records in Salesforce. As a Salesforce Certified Integration Architect, what should be your primary focus in this situation?

Northern Trail Outfitters (NTO) use Salesforce to track leads, opportunities, and to capture order details. However, Salesforce isn't the system that holds or processes orders. After the order details are captured in Salesforce, an order must be created in the remote system, which manages the orders lifecylce. The Integration Architect for the project is recommending a remote system that will subscribe to the platform event defined in Salesforce.Which integration pattern should be used for this business use case?