http are just a set of protocols
state less protocol :
   every time you visit a page, you are a new user.
session : stored state between frontend and backend
cookie : Is just a information 
I need to send data to browser form server
http Header: client
             Browser Info
             date time
             cookie to store
request response architecture:
      browser ---------------> server
     (GET,POST)-->         <--(200,404)
response code [ 200, 404 ]
      ->what action to perform  (GET,POST,DELETE)
      ->where to perform "http://example.com/auth
      ->was it done
HTTP/2: 
 http means http2
       http/1.1 is a fallback(substitute) & is still used
uses compressions
uses multiplexing (many files at same time)
uses encryption (https)
In AWS, we don't use http for internal communication
    
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