The business requirement is to not have any authetication/authorization process.Basicaly Gues user able to create a case. Develpers require to know how can they find the activity or ruleset that actually performs the custom authentication and authorization in pega 7.2 (Cloud)
Hi, Did not get your question clearly?, do you want how to implement custom authentication? or your guest users hsould not use any authentication and create the cases?
in any of the above scenarios if you have to create Authentication service under sys admin as custom and update your XML file with Servlet mapping and provide the URL to the user. and write your own logic under authentication service rule.
You should look into using Pega Mashups (previously known as IAC) for that use case where you want to initiate cases as Guest.
I am sharing few links below for you to look at. Hope that helps. At first it may look quite overwhelming to understand IAC and implementing it, but once you go through the documentation and understand the concept it's not that complex.