1. illustrate
   1. Windows Azure Fabric
   2. Azure Services Platform
2. Software Stack
   1. IDE
      1. Visual Studio
      2. Eclipse
   2. Tools
      1. PHP
      2. Perl
      3. Python
      4. Ruby
   3. Fabric
      1. Apache
      2. MySQL
3. Amazon EC2
   1. Hadoop Core
      1. Hadoop
         1. Lucene
   2. HBase
   3. HDFS (Hadoop Distrbuted File System)
4. Google App Engine
   1. MapReduce
   2. BigTable
   3. GFS
5. Windows Azure Platform
   1. Windows Azure
   2. SQL Azure
   3. .Net Services
   4. Live Services
6. Sun Open Cloud