When user clicks Check Preferences as part of a Lightning flow in Salesforce, preferences from an externally hosted RESTful service are to be checked in real-time. The RESTful service has OpenAPI 2.0 JSON definitions, responding in data types of Boolean and string values.
Which integration pattern and mechanism should be selected to meet the conditions?

Universal Containers (UC) uses Salesforce to track the following customer data:
1. Leads,
2. Contacts
3. Accounts
4. Cases
Salesforce is considered to be the system of record for the customer. In addition to Salesforce, customer data exists in an Enterprise Resource Planning (ERP) system, ticketing system, and enterprise data lake. Each of these additional systems have their own unique identifier. UC plans on using middleware to integrate Salesforce with the external systems.
UC has a requirement to update the proper external system with record changes in Salesforce and vice versa.
Which two solutions should an Integration Architect recommend to handle this requirement?
Choose 2 answers

Universal learning (UC) is embarked on Salesforce transformation journey, UC will decommission the legacy CRM system and migrate data to Salesforce. The data migration team asked for a recommendation to optimize the performance of the dataload to Salesforce.
Which approach should used to meet the requirement?

What capability should an Integration Architect consider if there is a need to synchronize data changed in Salesforce to a 3rd party with a JSON-based API endpoint?

Northern Trail Outfitters (NTO) has an integration set up between a Salesforce org and a quoting system. NTO would like to show a notification to all sales representatives that use Salesforce anytime the quoting system will be taken down for maintenance.
Which Salesforce API should an Integration Architect use to fulfill this requirement?