Modular Design Systems

About This Module

Modularity is one of those principles that sounds obvious until you’re maintaining a system that violates it. This interactive lesson makes the concept concrete — walking through how it applies to both software architecture and user interface design, with hands-on elements throughout.

The module covers:

• Architecture of Modularity — high cohesion, low coupling, and why the distinction matters at scale
• Real-world parallels — automobiles, LEGO, and what physical engineering figured out before software did
• Structural patterns — layered separation and plug-and-play interfaces, illustrated with diagrams
• Atomic Design in UX — Brad Frost’s hierarchy from atoms to pages, and how it prevents logic contamination in presentational components
• Module patterns in JavaScript — the Revealing Module Pattern, IIFEs, and a live Event Bus (Pub/Sub) simulator where you can toggle individual modules on and off
• Knowledge check — 10 questions across all topics, auto-advancing

Built for an intermediate audience: software developers, systems engineers, or UX practitioners who want a tighter handle on compositional design.

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