Accelerated Mobile Pages (AMP)

Accelerated Mobile Pages (AMP) is an open source project created to improve the performance of web pages for mobile devices. The project was spearheaded by Google and Twitter.

The technology behind AMP enables lightweight pages that load more quickly for smartphone and tablet users. That capacity has become increasingly important as more and more people use mobile devices as their primary computers. 

To increase the speed and functionality of mobile pages, AMP uses a stripped-down version of HTML. Some tags that work for regular web page code can't be used for AMP. A lightweight version of CSS is required; images load only when the user scrolls to their location and forms are not supported. AMP provides a limited JavaScript library.

Google caches most AMP pages but they can also be maintained by publishers and third parties. According to Google, AMP pages served in Google search used a tenth of the data of standard pages and, as a rule, loaded in less than a second.