This document discusses the importance of front-end development in 2019. It outlines how user demands, new technologies, and increased knowledge have changed the front-end landscape. Modern front-end development involves skills like React, Vue, JavaScript, responsive design, and APIs to create fast and engaging experiences across devices. Examples are given of how Spotify and other companies have improved their mobile websites to match or exceed native apps in usage. Emerging APIs are also discussed that will continue enhancing interactive capabilities on the web.