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       Sales force.com's platform as a service (PaaS) product is known as Force.com. 
       The Force.com platform allows external developers to create add-on applications that integrate into the main salesforce.com application and are hosted on salesforce.com's infrastructure.
  	
These applications are built using Apex (a proprietary Java-like programming language for Force.com) and Visualforce (an XML-like syntax for building user interfaces in HTML or Flex).
  
 
         
         
         
    
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