Northern Trail Outfitters (NTO) has hired an integration architect to design the integrations between existing systems and a new instance of Salesforce. NTO has the following requirements:
1. Initial load of 2M Accounts, 5.5 million Contacts, 4.3 million Opportunities, and 45,000 Products into the new org.
2. Notification of new and updated Accounts and Contacts needs to be sent to three external systems.
3. Expose custom business logic to five external applications in a highly secure manner.
4. Schedule nightly automated dataflows, recipes and data syncs.
Which set of APIs are recommended in order to meet the requirements?