text: Serverless 
  
  user's proﬁle page. In this scenario, you may choose to create a Lambda function that creates a 
  
  thumbnail automatically. Amazon S3 is one of the supported AWS event sources that can publish 
  *object-created events*and invoke your Lambda function. Your Lambda function code can read the 
  
  photo object from the Amazon S3 bucket, create a thumbnail version, and then save it in another 
  
  Amazon S3 bucket. 
  
  •**Image identiﬁcation**– Given the same photo sharing application, suppose now that you want to 
  provide automatic categorization of images for your users. In this scenario, Amazon Rekognition 
  
  will queue each images for processing. After analysis, faces are detected and your application 
  
  can implement similarity scores to group photos by family members, for example. Objects, 
  
  scenes, activities, landmarks, and dominant colors are detected and labels are applied to improve 
  
  categorization and search. 