This document provides an overview of OpenStack, an open source cloud computing platform. It discusses the benefits of OpenStack such as cost savings, operational efficiency, and accelerated innovation. It also describes the different types of clouds (public, private, hybrid) that OpenStack supports. The document outlines key facts about the OpenStack community, which includes over 70,000 members collaborating across 650 organizations in 185 countries. It provides examples of how different industries and companies are using OpenStack.