text: Serverless 
  
  Examples: 
  
  •**Websites**— Suppose you are creating a website and you want to host the back-end logic on 
  Lambda. You can invoke your Lambda function over HTTP using Amazon API Gateway as the 
  HTTP endpoint. Now, your web client can invoke the API, and then API Gateway can route 
  the request to Lambda. You can also implement route authentication and authorization by 
  
  integrating Amazon Cognito with API Gateway 
  
  •**Mobile applications**— Suppose you have a custom mobile application that produces events. 
  
  You can create a Lambda function to process events published by your custom application. For 
  
  example, you can conﬁgure a Lambda function to process the clicks within your custom mobile 
  
  application. 