Group 1 - Mastering Vue3 is essential for developers to stay relevant in the rapidly evolving front-end technology landscape [2] - The core modules to focus on include the responsive system and Composition API, which enhance code maintainability and reusability [2] - The use of Proxy for reactivity in Vue3 allows for better tracking of object property changes and array index modifications compared to Vue2 [2] Group 2 - Component-based development is fundamental for building large applications, with practical projects demonstrating clear communication logic between components [2] - The virtual DOM and Diff algorithm optimizations in Vue3 significantly improve performance by reducing unnecessary DOM operations [3] - The integration of tools like Vite enhances development efficiency through features like cold start and Hot Module Replacement (HMR) [3]