Introducing Aura Components

The Lightning Component framework is a UI framework for developing Lightning components for mobile and desktop devices. Lightning web components and Aura components can coexist and interoperate on a page.

Lightning Web Components uses core Web Components standards and provides only what’s necessary to perform well in browsers supported by Salesforce. Because it’s built on code that runs natively in browsers, Lightning Web Components is lightweight and delivers exceptional performance. Most of the code you write is standard JavaScript and HTML.

For new components, create Lightning web components instead of Aura components. Lightning web components perform better and are easier to develop than Aura components. However, when you develop Lightning web components, you also may need to use Aura, because LWC doesn’t yet support everything that Aura does. We're actively working in each release to eliminate these gaps so that LWC works for all use cases.

Configure Lightning web components and Aura components to work in Lightning App Builder and Experience Builder. Admins and end users don’t know which programming model was used to develop the components. To them, they’re simply Lightning components.

This developer guide covers how to develop custom Aura components. The Lightning Web Components Developer Guide covers how to develop custom Lightning web components.