This document discusses cloud computing and Amazon Web Services (AWS). It begins by comparing cloud computing to a trend in high school that many talk about but few truly understand or implement well. The document then covers what cloud computing is, traditional systems versus cloud, characteristics of cloud computing like scalability and virtualization, cloud architecture models, and AWS EC2 instances. It notes that while not physically in the sky, cloud computing utilizes real data centers, hardware, people, and infrastructure. The document explores security aspects of AWS and how AWS makes it easy to deploy, access, and terminate cloud computing resources. It concludes by suggesting that cloud computing will make giving advice, business operations, and travel less stressful.