Lightning Aura Components Developer Guide

Introducing Aura Components
Quick Start
Creating Components
Using Components
Communicating with Events
Communicating Across the DOM with Lightning Message Service
Creating Apps
Styling Apps
Developing Secure Code
Lightning Locker
Lightning Web Security
Content Security Policy Overview
Using JavaScript
Working with Salesforce Data
Testing Components
Debugging
Performance
Reference
PDF

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Lightning Web Security

Lightning Web Security is designed to make it easier for your components to use secure coding practices. Lightning Locker has been the default security architecture for all Lightning components. Lightning Web Security (LWS) is gradually replacing Lightning Locker for Lightning web components and Aura components. LWS is based on web standards and has fewer restrictions and more functionality than Lightning Locker.

For detailed information on Lightning Web Security, including how to enable Lightning Web Security instead of Lightning Locker, see the Lightning Web Components Developer Guide.