At the first AMP conference (in March 2017), many features and prototypes were demonstrated. Among them was a full messaging client, complete with live messaging and push notifications, built by AMP team member Sebastian Benz. This example was particularly interesting since it uses AMP to build what can be described as a relatively complex messaging app. By using AMP components creatively, in ways beyond what they were originally designed for, it was possible to build such an application. This was built on a framework that--as you will know by now--doesn't support custom JavaScript or programming. This was a real eye-opener. It demonstrated the flexibility of AMP--by using and combining AMP components creatively, complex behaviors and applications could be built.
Another point that this example drove home was that AMP is not just about pages...