I saw this come up on /r/aws a few days back.
This response seemed illuminating:
https://www.reddit.com/r/aws/comments/1lxfblk/comment/n2qww9...
> Looking at (this section)[https://will-o.co/gf4St6hrhY.png], it seems like you're trying to queue up an asyncronous task and then return a response. But when a Lambda handler returns a response, that's the end of execution. You can't return an HTTP response and then do more work after that in the same execution; it's just not a capability of the platform. This is documented behavior: "Your function runs until the handler returns a response, exits, or times out". After you return the object with the message, execution will immediately stop even if other tasks had been queued up.
replies(2):