Design systems, not pages. This is an introduction to atomic design (http://bradfrostweb.com/blog/post/atomic-web-design/), a methodology for crafting an effective interface design system. It also introduces Pattern Lab (http://patternlab.io/), a tool for implementing atomic design systems and pattern libraries.