The document discusses the three essential pillars for developing frontend components in a design system: development, documentation, and communication. It focuses on development principles like atomic design and styled components. For documentation, it recommends creating a website with code examples, design usages, and accessibility info. Finally, it emphasizes effective communication through channels like Slack, responding to feedback and requests quickly, and announcing breaking changes in advance. The overall message is that components require development as well as comprehensive documentation and transparent communication.