This document provides an overview of Microsoft Azure, including what it is, when it launched, how it works, how much it has grown, its components, benefits, cons, and reasons for using it. The key points are: - Microsoft Azure is a public cloud platform launched in 2008 that manages hardware infrastructure and resources accessible over the internet. - It uses virtualization technology to emulate computer hardware with software and maintains data centers hosting servers for customers. - Since 2008, Azure has grown to be the second largest public cloud platform after AWS, with 22% of the market share as of 2021. - Its main components include computing, storage, databases, content delivery networks, and security/authentication services.