For what the WebApp is and which flows it delegates to Paylead, see the WebApp concept.
Authentication
The SSO flow between your bank app and the WebApp, covering session management, access pre-check, and silent re-authentication.
WebView configuration
Cookie and WebView setup, User-Agent configuration, and opening URL parameters (language, visual theme).
Troubleshooting
Diagnose a recurring auth screen, lost cookies, or hard-to-trace behaviour.
Mobile Bridge
How the WebApp calls native iOS/Android capabilities (open a URL, write to the clipboard, download a file) over a JSON-RPC 2.0
postMessage bridge.