s/4 Hana Public cloud Use full app names

APP NAME                         -         Description(USE)

Display Authorization Trace - like SU53 in onpremise.

Display Security Audit Log -  If we want check security audit log
IAM Information System - It works something like SUIM
Display Authorization Trace - To capture the authorization trace.
Monitor Email Transmission - Display all outgoing email requests & Send a test email to check
Monitor User Sessions - To monitor all active users session, you can delete if you want.
Monitor Email Transmissions - Like SOST in On-premise