Micro-Frontends Rollout Checklist
A rollout checklist for micro-frontends architectures. It validates team ownership, runtime integration, shared dependency and contract versioning, independent deployment, and a shared performance budget.
When to Use This Checklist
Use this checklist when several teams need to ship independently into one web application and a single monolithic frontend has become a bottleneck. Micro-frontends split a UI into independently built and deployed pieces, composed at runtime or build time. The pattern pays off only when team boundaries, shared contracts, and runtime integration are deliberate, so validate them before rollout.
How to Use This Checklist
Start with ownership. Each micro-frontend should map to exactly one team with a clear domain, mirroring a team-topologies view of the system. Blurry boundaries reintroduce the coupling you are trying to remove.
Then settle the integration mechanics. Pick one composition approach, agree shared dependency versions, and decide how the framework runtime is shared so a page never loads two copies of React or Angular. Define the communication contract for cross-app events and any shared state, and treat it as a versioned API.
Protect the user experience. A design-system contract keeps remotes visually consistent, and error boundaries keep one failing remote from taking down the whole shell. Enforce a shared performance budget, because independent teams can each add weight that compounds on the combined page.
What Good Looks Like
Each remote deploys on its own pipeline without coordinating releases. Shared dependencies are singletons, contracts are versioned with backward-compatibility rules, and a failing remote degrades gracefully. An integration smoke test exercises the full composed shell before every launch, and cross-app observability ties errors and traces back to the owning team.
Common Pitfalls
The classic mistake is treating micro-frontends as a purely technical choice while leaving team boundaries unchanged; the result is a distributed monolith. Duplicated framework runtimes bloat the bundle and break shared context. Skipping the design-system contract produces an inconsistent, jarring UI. Teams also forget that shared contracts need versioning, so one team's change silently breaks another at runtime.
Related Resources
Pair this with the micro-frontends and design-systems practices, the backends-for-frontends pattern, and team-topologies for ownership. Performance budgets keep the combined experience fast.