What Is the Console Developer Guide?

There are two APIs that interact with Salesforce console apps—the Lightning Console JavaScript API and the Salesforce Console Integration Toolkit. This guide provides reference material for both. Although both APIs provide similar functionality, they do not share methods and are restricted to Lightning Experience and Salesforce Classic, respectively. You cannot use the Salesforce Console Integration Toolkit with Lightning console apps, and you cannot use the Lightning Console JavaScript API in the Salesforce Classic console.