text: Serverless 
  
  could be listening. The handler function might create and send another event to an SNS queue so 
  
  that alerts for high temperature are sent to users through SMS messages. 
  
  The function ﬁnally wraps up the JSON weather data into a new event and sends it back to API 
  
  gateway. Afterward, the function continues to handle hundreds of additional requests. Request 
  
  from users slow down after 2AM, so after some time the Lambda service will tear down the 
  
  function execution environment to conserve resources. As a Customer, you will only be charged for 
  
  function usage. 