Ability to find services such as Exchange and report on the health state of it
Uptime based on Distributed Apps Rollup
Thank you for your feedback.
While there is no out-of-box way to achieve this today, you can manually set up a dashboard with search queries.
Blog on how to monitor IIS by converting IIS Management Pack into search queries: http://blogs.msdn.com/b/dmuscett/archive/2014/11/05/iis-mp-event-alerting-rules-s-opinsights-searches-equivalents.aspx
Also, distributed application support is tracked here: http://feedback.azure.com/forums/267889-azure-operational-insights/suggestions/6519314-business-service-distributed-application-health11