Lightning Web Security (LWS) in Salesforce

Lightning Web Security (LWS) is Salesforce’s modern client-side security architecture designed to secure Lightning Web Components (LWC) and Aura components. Introduced as an improvement over the older Lightning Locker service, LWS enhances component isolation with better performance and compatibility with modern web standards.

Key Features of LWS

• Namespace isolation: Each Lightning web component runs in its own JavaScript sandbox, preventing unauthorized access to data or code from other namespaces.

• API distortion: LWS modifies standard JavaScript APIs dynamically to enforce security policies without breaking developer experience.

• Supports third-party libraries: Unlike Locker, LWS allows broader use of community and open-source JS libraries.

• Default in new orgs: Enabled by default for all new Salesforce orgs created from Winter ’23 release onwards.

Benefits of Using LWS

• Stronger security: Limits cross-component and cross-namespace vulnerabilities.

• Improved performance: Reduced overhead compared to Locker’s wrappers, resulting in faster load times for users.

• Better developer experience: Easier ...