Instead of reinventing the wheel, Microsoft takes a strong and brilliant move to integrate Hadoop on its blockbuster cloud computing PaaS stack. Isn't it? Of course, LINQ2HPC was embraced many .NET developers, however, Hadoop distribution for Windows is also the safest move. This paper evaluates the early preview of Hadoop on Azure. It cover the basics of using Hadoop on Azure. It would be helpful to read about MapReduce and Hadoop Topology before learning about Hadoop on Azure.