Hi,

If i choose 4 small instances and have one application. Does azure do the load balancing for you? So it would technically be quicker to have your application on 4 small instances then 1 small instance.

If you deploy your application in 4 instances, then yes Windows Azure will load balance the application for you. A few things to consider here:

• Windows Azure used Round Robin load balancing by default so if you're doing "InProc" session management, it will not work.
• You MUST deploy your application in at least 2 instances to avail Windows Azure SLA.
• While adding more instances increases the availability of your application, it also adds to your cost. Please note that Windows Azure will charge you for each instance.

Hope this helps.