Context A large enterprise application must be split across four independent teams, each owning a separate React micro-frontend deployed independently. The Problem All four applications are bundled together, meaning a change in any team requires a full rebuild and redeployment of the entire application. Constraints Configure Webpack Module Federation for the shell and at least two remote micro-frontends. Share a single React instance across all remotes to avoid version conflicts. Implement error boundaries to isolate remote failures. Expected Deliverable A Module Federation shell application integrating two remote React micro-frontends, with shared React singleton and error boundary isolation per remote.