Splunk is a commonly available solution in the same space as IOAz. Splunk is a commonly used tool, but Splunk, by itself, does not offer any z/OS based information. Splunk requires some form of an additional collection mechanism to support z/OS.
The IBM Common Data Provider (CDP) is a SMF and message collection layer for z/OS. When you get IOAz you use CDP as the mechanism to collect z/OS data and send it to the IOAz server and GUI. This same process may also feed Splunk.
The following is an example of z/OS data in Splunk provided by IBM CDP.
