title: How to acknowledge the processing of a group of messages
body: <p>I am lost in the jungle of AWS. I wish to acknowledge the process of a group of messages but i don't know what can be done.</p>
  <p>I use a SQS queue to push messages then process them by a specific handler based on the message type. These messages could be grouped by an emitter id or something else. What is the common way to acknowledge the processing of a group of messages?</p>