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Native Federation v4 Explained: Why a Second Module Federation Was Built on Web Standards

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Native Federation is an alternative implementation of the micro-frontend module federation pattern, designed to address structural limitations in webpack's original Module Federation approach. While webpack's Module Federation successfully enabled runtime remote module loading, it tied every host and remote application to webpack's proprietary runtime and container format. Native Federation instead builds directly on browser-native ECMAScript Modules and Import Maps, eliminating the need for a bundler-mediated runtime layer. This architectural shift aims to reduce tooling lock-in and ease migration friction when teams move away from webpack to bundlers like Vite or esbuild. The v4 rewrite marks a significant evolution of the project, and a forthcoming eight-part series will explore its core systems, adapters, orchestration, and migration paths in depth.

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