Originally, Co-Founder Mark <b>Zuckerberg</b> used custom-developed PHP or PreHypertext Processor. 
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</div><div>But as the platform evolved, the makers needed to add more agility, scalability and better performance to it. So, they addedmany new<b> programming languages </b>to it.</div><div><br></div><div><img src="




 

 
 

 
  

 
 

 


 

 
 

 
 

 
 
 

 
 https://www.letsdiskuss.com/assets/upl_files/01bf91ba12.png" style="width: 527px;"> <span style="font-size: 9px;">(Courtesy: Python Anywhere News)</span></div><div><br></div><div> 
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</div><div>At present, while the front-end is <b>PHP</b>, at the backend they use C, C++, Java, and Python. In addition, <b>Erlang </b>is used for Facebook chats. And I am sure there are many other languages like XHP, Haskell, D and Hack that they use in different features, apps and add-ons.</div><div><br></div><div><img src="




 

 
 

 
  

 
 

 


 

 
 

 
 

 
 
 

 
 https://www.letsdiskuss.com/assets/upl_files/01c3d34b21jpeg" style="width: 674px;"> <span style="font-size: 9px;">(Courtesy: Hacker noon)</span></div><div><br></div><div> 
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</div><div>All these<b> programming languages </b>are integrated to Thrift framework that enables a seamless communication between them and a consistent experience for the users.</div><div><br></div><div>
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</div><div>Hope this answers your question.</div><div><br></div><div><img src="




 

 
 

 
  

 
 

 


 

 
 

 
 

 
 
 

 
 https://www.letsdiskuss.com/assets/upl_files/01c5ccad26.jpg" style="width: 674px;"> <span style="font-size: 9px;">(Courtesy: Extreme Tech)</span></div>

What language did Mark Zuckerberg use to create Facebook?