Thanks for reading my question.
Scenario: We need to use a 3rd party Secured ArcGIS Server map Service in our custom web application. When end-users are browsing our custom web application we don’t want credential pop-up appear for them as we're using 3rd party Secured ArcGIS Server map Service. We want our end-users to interact with the Secured ArcGIS Server map Service seamlessly without providing any credentials.
Currently, we don't know where Secured ArcGIS Server map Service is hosted either AGOL or Standalone ArcGIS Server. But, my hunch is Standalone.
Give us your thoughts and bounce the ideas!