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Business Platforms & EA · Intermediate

Content Security Policy Trusted Site

Setting that allows Lightning components to load resources or connect to specified third-party URLs.

Definition

Trusted URLs (formerly CSP Trusted Sites) permit fetch requests, images, fonts and frames from external domains in Lightning pages, separate from Apex callout allowlists.

Exam tip

Browser-side calls need a trusted URL; Apex callouts need a remote site setting or named credential.

Related terms