03 · Application Architecture

Where careers level up: structure, state, data, forms, and API contracts.

Priority: Critical

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Domains

• Frontend Architecture — Boundaries, layering, and structuring applications that grow.
• State Management — The strategy of state — categories, ownership, and flow (React's mechanism lives in 02).
• Data & Server State — Fetching, caching, and modeling server data on the client.
• Forms & Validation — Form state, validation, and type-safe input contracts.
• API Design & Contracts — Designing the contract between frontend and backend.

This is an index. Each domain expands into topics, and each topic into standalone articles following the article template.