Where can I find a copy of the Mainframe Application Tuner User Guide and other documentation?
The documentation for more recent releases is now found on our "TechDocs" site:
https://techdocs.broadcom.com/
From there enter in the "Select a product" box the version of Mainframe Application Tuner (MAT) that you desire.
For example, entering "mainframe" will display the documentation releases of MAT that are available.