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 is implementing Salesforce, including a new business process for order management. All Opportunities that reach the Close -Won stage need to be sent to an order management system. When this Opportunity is marked as Complete, a record must be created in their billing system. After the bill is processed, their billing system will be marked as Paid. Each status change from each system must be reflected in Salesforce so call center agents can answer questions about the status of a customer order. All system administrators have agreed to use recent Production data to seed their test systems. What types of sandbox should an Architect recommend end-to-end testing occur in? Choose 2 answers

Northern Trail Outfitters (NTO) uses a custom mobile app to interact with their customers.
One of the features of the app are Salesforce Chatter Feeds. NTO wants to automatically post a Chatter item to Twitter whenever the post includes the #thanksNTO hashtag.
Which API should an Integration Architect use to meet this requirement?

Universal Containers needs to send order details to the ERP system using an Apex callout to a REST API via HTTPS. The client has concerns with the integration's security and insists that such order details should be transmitted securely.
Which two approaches should be used to ensure secure transmission of data from Salesforce to the ERP's REST API?

An Integration Architect has built a Salesforce application that integrates multiple systems and keeps them synchronized via Platform Events.
What is taking place if events are only being published?