Private Synthetic locations in Dynatrace enable monitoring of internal applications within a private network infrastructure, often necessitating proxy configurations. As of Dynatrace and ActiveGate versions 1.183, private browser monitors support Proxy Auto-Configuration (PAC) files, which are JavaScript functions that determine the routing of web browser requests either directly or via a proxy server. To implement PAC files, users can provide them through script mode for single-URL browser monitors and browser clickpaths by specifying the "pacUrl" in the configuration object of a JSON file. This feature is specific to private synthetic locations and overrides any existing proxy settings at the ActiveGate level, with the PAC file requiring hosting via HTTP/S. Detailed guidance for configuring a proxy for Dynatrace private synthetic monitoring is available in the Dynatrace Help documentation.