How does the refined reactivity affect practical Vue app development?

Vue 3's refined Proxy-based reactivity delivers precise dependency tracking, eliminating Vue 2's limitations on dynamic properties for more reliable state management in production apps.​

Developers build complex UIs faster with automatic deep reactivity in objects and arrays via reactive(), avoiding manual mutation hacks and ensuring consistent updates.​

Fine-grained tracking cuts unnecessary re-renders by up to 40%, optimizing performance in dashboards and forms without extra memoization boilerplate.​

Tree-shakable APIs like ref() enable composable logic reuse, simplifying refactoring and testing in scalable enterprise codebases.