The new app model does not require an installation process for an app or parts of it to work and has multiple potential uses.
Google Play Instant, Platform
Google Play Store Offers 'Try Now' Button For Instant Apps
Google is rolling out a Try Now button to test instant apps on the Play Store - news, abrir play store app
Google Is Rolling Out A Try Now Button To Test Instant Apps On The Play Store - News
Ultimate Guitar takes advantage of 10MB limit for instant apps and improves install rate by 8%, Developer stories
Google is rolling out a Try Now button to test instant apps on the Play Store - news
Google is rolling out a Try Now button to test instant apps on the Play Store - news, abrir play store app
Android Instant apps - what do they mean for users and developers?
Google is rolling out a Try Now button to test instant apps on the Play Store - news, abrir play store app
Google is rolling out a Try Now button to test instant apps on the Play Store - news, abrir play store app
Google's Test to Block Third-Party Cookies in Chrome Starts Jan. 4
Google is rolling out a Try Now button to test instant apps on the Play Store - news
Google is rolling out a Try Now button to test instant apps on the Play Store - news
Google is rolling out a Try Now button to test instant apps on the Play Store - news, now play
A new mobile friendly testing tool, Google Search Central Blog