text: First, a web or mobile client makes an HTTP request to GET /cart/*A1234B56*for a list items in a 
  cart. 
  
  A component needs to accept the request and extract metadata, such as HTTP method, path, 
  
  extra path info, query string parameters, headers, and cookies. That component will also verify the 
  
  request is from an authenticated and authorized entity. In AWS, API Gateway accepts the inbound 
  
  URL, extracts the parameters, query string, and headers and creates an event to send to other 
  
  services for processing. 
  
  Example based on event.json API Gateway proxy event for a REST API: 