The Bundler Revolution: Why Angular 21 Ditches Webpack for Esbuild and Vite

Angular's latest versions achieved dramatic improvements in build speed not by replacing the compiler, but by switching bundlers from Webpack to Esbuild and Vite. This architectural shift is critical because it demonstrates how toolchain choices directly impact developer productivity—especially in large enterprise applications where build times were previously measured in minutes. For developers working with Angular, understanding this distinction between compilation and bundling is essential to leveraging these performance gains and making informed decisions about their own toolchains.