Micro-Frontend Orchestration
We had three autonomous teams stepping on each other's toes in a massive monolith. A bug in the "Support Chat" would regularly crash the "Payment Gateway," and deployments required a 4-hour manual regression test.
Deployment frequency increased from once a month to multiple times a day
The Architectural Cleanup
I architected a Shell/Container system using Module Federation. Each team was given a "Remote" repo with its own CI/CD pipeline, allowing for independent deployments without affecting the Host.
Engineering the Solution
I enforced a "Shared Design System" using Tailwind CSS. By utilizing Tailwind's prefixing and CSS Layers, we ensured that the Shell's styles never leaked into the Remotes, solving the "CSS Collision" nightmare typical of MFEs.
The 'Who Wrote This?' Chronicles
The "Dependency Drift" was our biggest hurdle. Team A upgraded to React 19 while the Shell was on 18, causing a runtime break. I implemented a "Strict Singleton" policy in the Webpack config and a custom CLI tool that audited peer-dependencies across all remotes during the PR stage.
Strategic Trade-offs
We traded "Bundle Size" for "Team Autonomy." There is a slight overhead in loading multiple remote entries, but the 10x increase in deployment velocity made the 50kb trade-off an easy sell to stakeholders.