Bring load balancing to windows server!
Many modern HTTP applications are deployed in enterprises with 3rd party load balancers running in layer 7 mode. I have yet to find a solution which runs on windows. NLB is often difficult to deploy because of incompatibilities with switches/hypervisors (some improvement with IGMP multicast), and does not operate in layer 7.
IIS AAR can do layer 7 but does not do high availability without combining with NLB
Andrew T commented
There appears to be a layer 4 load balancer as part of the SDN features in the latest technical preview - https://technet.microsoft.com/en-US/library/dn890699.aspx
No clear documentation on how/if it's possible to configure stand alone without the network controller
Ravi Rao: So you are saying that we will need to implement Azuste Stack just to load balance two IIS servers?
Ravi Rao [MSFT] commented
Thank you for the feedback. Layer 4 load balancing as deployed in Azure is coming to Windows Server as part of the Microsoft Azure Stack announced at Ignite. For more details on networking in the Microsoft Azure Stack, please see this talk: http://channel9.msdn.com/Events/Ignite/2015/BRK2471.