JavaScript is the ubiquitous runtime for browser code, and the popularity of Node.js as a server-side platform continues to grow. The AWS SDKs for Node.js and JavaScript in the Browser enable you to call AWS services from either platform. In this talk, we demonstrate the portability of the SDK by building a Node.js web app and then porting the code to run as a browser extension. In the process, you'll learn about a number of the productivity features included in these SDKs.