Architecting Scalable Micro-Frontends with Vue: Composition vs. Iframe vs. Module Federation

Modern Vue micro-frontends favor Webpack Module Federation or Vite-native solutions for runtime integration over heavy Iframes or build-time Composition.

Architecture at scale requires decoupling. 1) Build-time integration (NPM packages) leads to dependency hell and slow deployments. 2) Iframes offer perfect isolation but suffer from performance and deep-linking issues. 3) Module Federation (Runtime integration) allows Vue apps to share dependencies (like the Vue core itself) while being deployed independently. It enables a 'Shell' app to dynamically load remote components without version mismatches.