This document discusses web components and package managers. It provides an overview of popular front-end frameworks and libraries from the past like React, Angular, and VueJS. It explains that web components will replace other forms of web development by providing a standard way for code to be reusable while maintaining compatibility. Package managers like NPM are important tools that developers widely use to manage dependencies. The document advocates that web components create a foundation for significant leaps in development capabilities by solving problems around design systems, templates, and libraries.