- Dev Build
- Local Server
- HMR = Hot Module Replacement
- File Watching Algorithm - written in C++
- Caching - Faster Builds
- Image Optimization
- Minification
- Bundling
- Compress
- Consistent Hashing
- Code Splitting
- Differential Bundling - support older browsers
- Diagnostic
- Error Handling
- HTTPs
- Tree Shaking - remove unused code
- Different dev and prod bundles