In May, Google announced they are beta testing AdWords AMP landing pages. Well, the beta is just about over and in the next two weeks, Google is opening up this feature to all advertisers in two weeks, Google said.
Here is help documentation on how to make AdWords AMP landing pages, so you should read up on it. You do not need to do AMP landing pages but it improves speed and Google says it should improve conversions really nicely.
Here is a GIF Google shared of the difference in speed:
Google said AMP landing pages for search text ads will be available for all mobile clicks—however, caching will initially only be available for the Chrome browser on Android. They will be rolling out support for additional mobile browsers in the coming weeks.
Forum discussion at Google+ and Twitter.