From my past experience, micro-frontends were awesome and liberating... in the beginning. Every team gets their own deploy pipeline and can deploy changes independent of each other, with their own error boundaries - awesome!

Over time though, the added overhead of micro-frontends really started slowing us down. For eg: instrumenting the web user experience with analytics, across app boundaries in a consistent fashion was a grueling coordination effort with multiple teams. A UI refresh would require coordinated effort across multiple teams. Sure, we had shared components, libraries with common business logic released as their own private packages, etc. But that's the exact overhead I'm talking about. Upgrading a shared dependency across multiple apps was quite the hassle.

After a couple of years, we ended up switching back to a monolithic frontend, with a single React app.