A Lightning app is a special top-level Lightning component whose markup is in a .app resource. On a production server, the .app resource is the only addressable unit in a browser URL.
A Lightning app is a special top-level Lightning component whose markup is in a .app resource.
On a production server, the .app resource is the only addressable unit in a browser URL. Access an app using the URL:
https://mySalesforceInstance.lightning.force.com/namespace/appName.app, where mySalesforceInstance is the name of the instance hosting your org; for example, na1.
