IIS addendum packs to tune IIS from 2012 forward.’IIS addendum packs’ to tune IIS from 2012 forward. The GitHub repository has two packs 2012/2016+ (version agnostic pack). This includes an IIS enabled group, Daily report and cleanup DataSource and WriteAction (tasks), as well as a regular expression to set up the IIS enabled group. The IIS enabled group is to enable IIS monitoring on servers IIS monitoring is needed.
Customize for environment
Update addendums to server naming conventions for enabled IIS monitoring. Read below to better understand addendum functionality.
First, the addendums include class/group, datasource and write action alert reports and automated alert closure workflows, as well as event count logic/reset monitorType.
Second, the group discovery, find/replace the pattern to various application/web server naming conventions where IIS monitoring IS wanted.
Third, the version agnostic has overrides to disable most perf and rule alerts. Can provide OFF packs to turn off performance counter collection rules, to keep both the OperationsManager, and OperationsManagerDW databases cleaner, thereby faster with less data.

Lastly, once addendum updated, save file, move to SCOM MS, and import.
Enjoy the ‘IIS addendum packs’ for how few alerts, perhaps life changing?! (sarcasm)
Documentation
Download Addendum packs https://github.com/theKevinJustin/IISAddendums
IIS2012 SCOM Management pack download https://www.microsoft.com/en-us/download/details.aspx?id=34767
IIS2016+ SCOM management pack download https://www.microsoft.com/en-us/download/details.aspx?id=54445