Amazon AppStream 2.0 is a fully managed, non-persistent application and desktop streaming service. Users can securely access the applications they need on any computer, as it delivers a stream of the desktop application to their web browsers. Amazon WorkSpaces, on the other hand, is a managed Desktop-as-a-Service (DaaS) that helps you provision virtual, cloud-based Microsoft Windows or Amazon Linux desktops. Amazon EC2 provides secure, resizable compute capacity in the cloud but is not tailored for streaming desktop applications to web browsers. And lastly, Amazon Chime is a communication service that lets you meet, chat, and place business calls, not related to streaming desktop applications.