What Does Lightning Locker Affect?

Find out what’s affected and what’s not affected by Lightning Locker. Lightning Locker enforces security and best practices for custom Lightning components you use in:

Lightning Experience
Salesforce mobile app
Experience Builder sites
Flows
Standalone apps that you create (for example, myApp.app) to run in Salesforce Classic or Lightning Experience
Any other app where you can add a custom Lightning component, such as Salesforce Console in Lightning Experience
Lightning Out
Visualforce pages in Salesforce Classic
Visualforce-based sites

Lightning Locker doesn’t affect environments where you don’t use custom Lightning components.

Release Preview

This release is in preview. Features described here don't become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can't guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.