DRY. Atomic design. Sass mixins. From backend to frontend, there's no question that web development is becoming increasingly modular. And web components are part of that evolution towards modularity. But many devs remain uncertain about why, when and how to use them. Front-end expert John Rogerson returns to the show to help de-mystify web components. We discuss the pros of web components (modularity, extensibility) and the cons (new technology, undefined standards, accessibility), as well as resources for understanding and getting started using web components.