"Today, we’re excited to announce Twilio Functions, a serverless environment to build and run Twilio applications so you can get to production faster."
I did just that ... I signed up for twilio, wrote a simple twiML inside their web editor, and attached it to a phone number.
No servers were involved (I am not sure how I could involve a server) and I "got to production" very fast.
What would I do differently now ?
 "Ring Forever"
Like communicating to separate service or database within a given request from an SMS or Voice callback, etc... functionality that until today would have required web-hooks running on some other server (or cloud function)?