Explore the world of Web Components and Polymer in this comprehensive conference talk. Learn about creating custom HTML elements, leveraging ready-made Polymer elements for web app functionality, and understanding the Polymer library's role in modern web development. Dive into topics such as the state of the ecosystem, HTML imports, local DOM, CSS selectors, and the Polymer Starter Kit. Gain insights on build processes, security considerations, performance optimization, and serverside rendering. Compare Polymer with Angular 2 and discover resources for further learning in this informative session from Philly ETE 2016.