Google is constantly trying to improve user experience (UX). In the past, Google algorithm updates focused on how businesses could improve their content and SEO practices.
Updates like Panda (which focused on improving the content websites provided), Penguin (which focused on link spam), and Pigeon (which improved local search results) all focused on behind the scenes improvements to Google’s algorithm.
Lately, Google has decided to focus on the visible search results that provide relevant content to users as quickly as possible. AMPs, Schema, and now Posts are all designed with this in mind.