AWS is a cloud computing platform launched in 2002 and relaunched in 2004. It provides infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). Key services include EC2 for computing capacity, S3 for storage, and databases. The top spenders on AWS are Netflix, Twitch, LinkedIn, Facebook, and Turner Broadcasting. AWS has over 200 services and a 33% market share compared to 18% for Azure and 8% for Google Cloud.