The Salesforce Bulk API provides a way to quickly load data into Salesforce. Autopilot takes advantage of it to communicate with Salesforce as efficiently as possible and minimize the number of Salesforce API calls used.
If you have access to the Bulk API when you initially connect to Autopilot, we'll automatically enable it for you. If you don't, you'll see this link in Settings under Salesforce Sync:
When you click this link, we check whether you have access to the Bulk API. If you do, we'll enable it. If you don't have access, and would like to, please contact your Salesforce account representative.