How Google Play Works

Google Play's billing system

Android Developers Blog: Notes from Google Play: making Play work for everyone

Google Play prevents you from using an older version of an app and demands to update it. After disabling Google Play (or service that is doing that) the app starts and works

What is Google Play Instant? How it works and its Advantages.

How Google Play works?

LightsOut' Malware In The Google Play Store: How It Works

How Google Play Works

Google Play Service Analysis (2) – How it works and what is different? – Antonio Hong's Story

Google Play - Wikipedia

Rewards of Google Play for users, businesses, and developers

Five things you may not know about Google Play - CNET

Rewards of Google Play for users, businesses, and developers