text: Topics are shown in orange boxes. Large topics may be broken down into several sub-topics in 
  blue. Icons represent related services or tools. Essential topics are noted with a green check box. 
  
  Important, but not essential, items are noted with a red mark. When a high level orange topic is 
  
  marked as essential, that means all of the sub-topics are essential too. 
  
  **Topics**
  
  • Amazon Web Services account 
  
  • Programming languages 
  
  • Development environment 
  
  • AWS cloud infrastructure 
  
  • Security model 