AppInsight For IIS and component-based licensing
Per the SAM licensing model, when using AppInsight for IIS in environments with component-based licenses, 30 component monitors count against your licensed number of component monitors for each IIS server you decide to monitor.
For example, if you have an active license for 1,500 component monitors and use AppInsight for IIS to monitor 10 IIS servers, 300 component monitors count against your total license. The number of sites and application pools you have on these servers is irrelevant.
(30 component monitors X 10 IIS servers = 300 component monitors used.)
This leaves you with 1,200 component monitors available for use elsewhere.
(1,500 component monitors - 300 component monitors used for AppInsight for IIS = 1,200 component monitors remaining).
The example below illustrates a situation where 40 component monitors are available, but surpassed the allowed number of 300 monitors by 60. The discrepancy is due to the fact that AppInsight applications cannot be partially licensed, as is the case with typical applications.
For more information, see SAM licensing model.