Most companies have design systems. Your architecture should use them.
What design systems provide:
- Base components (Button, Input, Card)
- Design tokens (colors, spacing, typography)
- Accessibility built-in
- Consistent look and feel
Your role in interviews:
- Assume base components exist
- Focus on composition and application logic
- Don't redesign Button from scratch
Example: "I'll use the design system's Card and Button components. My Feed component composes these to display posts."