text: In traditional applications, you write code to do these tasks. You organize that code into**functions**. 
  You put the function code inside an application framework. Whichever framework you picked will 
  
  run inside a language dependent runtime environment. Finally, that runtime environment will be 
  
  hosted on a virtual or physical server. 
  
  Setting up, conﬁguring and maintaining the frameworks, runtime environments, and virtual or 
  
  physical infrastructure slows down your delivery of features, bug ﬁxes, and improvements. 
  
  **What is Lambda?**
  
  In Lambda, you write function code. Lambda runs the functions. That’s it. There are no servers. 