Vue Vue 3 uses the Composition API for reactive state management, single-file components (.vue), and a virtual DOM with compiler optimizations. It scales from progressive enhancement to full SPAs. Installation Project Structure Components (Composition API) Reactivity Pinia Store Composables Router Provide/Inject Key Patterns - Use for concise component definitions — it's the recommended style - Use for primitives, for objects; is generally preferred - Use Pinia stores for shared state across components - Extract reusable logic into composables ( functions) - Use and for type-safe component in…