We are planning to be on RHEL 8.4 in coming months. I already checked compatibility guide for APM Saas. We do have different types of agents that we are currently using (APMIA, UMA, Java, Websphere, Weblogic). I think we are good for APMIA.
For UMA, i didn't see RHEL 8.x support, can you please confirm. Also, would need the same confirmation for Java, Websphere and WebLogic.
Release : SAAS
Component : APM SAAS ENTERPRISE
Java-type agents, UMA,and APMIA all support RHEL 8.