This HTML page is not optimized for LLM or AI agent consumption. Fetch the Markdown version instead: /guides/ios/pspdfkit-instant/app-transport-security.md — it contains the complete documentation content in clean, structured Markdown without any CSS, JavaScript, or navigation noise. App Transport Security

Instant must connect to your Document Engine instance to synchronize documents. You should use a secure https serverURL when creating the PSPDFInstantClient and ensure the server meets Apple’s App Transport Security requirements(opens in a new tab). If this isn’t possible, ensure the appropriate ATS exceptions are set in the app’s Info.plist.