The Stop IIS Web Site action will perform a stop operation on the designated web site within IIS.
IgnoreFailure
When true, a failure to stop the site is ignored and the update will continue. The action uses the site description, or Server Comment, to find the web site in IIS. This value can be changed and is not guaranteed to be unique. Furthermore, many updates will still succeed even if the site is not stopped.
SiteName
This is the name or description of the web site on the IIS server. When the action executed, a site with this name on the server running the update is located. If a site is found, the site is stopped. When the action is rolled back, if a site was stopped, it is restarted.