Universal Containers needs to integrate three separate apps: a Salesforce app, an app developed to Heroku, and a custom-built app hosted on-premise. Each app needs to send and receive data from any of the other apps. Which two integration options should an Architect recommend that can connect all three systems in a fire-and-forget pattern? Choose 2 answers.

A client wants to migrate their on-premise application to Heroku. The application maintains a local, in-memory cache for its data store to improve performance.
What should an Architect advise the client about running the application on Heroku?

A customer's IT department will not allow VPN access through their on-premise gateway. Users need to be able to access trusted Heroku applications only when they are in the office. These applications are deployed to a Heroku Private Space.
Which two Private Spaces features should an Architect recommend to enable on-premise users to gain the access they need? (Choose two.)

A client has data in a Heroku Postgres table. They want to generate analytics based on the table and make the results available in their Salesforce org. Their Salesforce administrator wants to minimize the amount of data that is written to Salesforce to accomplish this. Which strategy should an Architect recommend on this scenario?

A client wants to use Heroku Connect to sync data bidirectionally between a Salesforce org and a Heroku Postgres database.
In this scenario, which two are advantages to setting a custom External Identifier field in the Heroku Connect mapping? (Choose two.)