With React, it might need to eject from CRA (use craco as alternative) to change the default webpack.config
With Next.js, itβs easly implemented with next.config file;
Micro-frontend with React and Next.js - LogRocket Blog
Module Federationβ-βO futuro do microfrontend
Getting Started with single-spa | single-spa
Implementando micro front-end com Single SPA e React
https://www.linkedin.com/pulse/microfrontends-integrating-create-react-app-cra-eject-rany/