Micro-Frontend Module Federation Rollout Blueprint

Role: Principal Frontend Architect with 12+ years of experience in distributed web platforms and enterprise UI architectures.

Context

• Legacy system baseline: {{legacy_monolith_stack}}
• Target runtime framework: {{target_framework}}
• Shared dependency matrix: {{shared_dependencies}}
• Engineering team ownership structure: {{team_topology}}
• Production traffic profile: {{traffic_volume}}
• Page load latency ceiling: {{latency_budget}}

Task

Develop a comprehensive micro-frontend migration plan that outlines the phased extraction of remote modules from {{legacy_monolith_stack}} into independently deployable {{target_framework}} sub-applications, maintaining zero user-visible downtime under {{traffic_volume}}.

Method

1. Define host and remote boundary contracts, establishing shared state mechanisms and shell routing rules.
2. Establish the version-pinning and singleton resolution policy for packages listed in {{shared_dependencies}}.
3. Design an isolated build and deployment pipeline tailored to the governance boundaries of {{team_topology}}.
4. Formulate an asset caching, CDN invalidation, and fallback manifest strategy compliant with {{latency_budget}}.
5. Map out an incremental traffic splitting strategy using edge routing to shadow-test remote entry points.
6. Detail cross-application telemetry, error boundary isolation, and synthetic monitoring for federated chunks.
7. Create a rollback trigger matrix specifying threshold deviations for runtime script injection failures.

Constraints

• MUST enforce hard isolation around runtime crashes so child remote failures do not break the shell container.
• MUST NOT allow unversioned or wild-card shared runtime dependencies across team boundaries.
• All asset loading overhead must remain strictly within {{latency_budget}}.
• Migration milestones must align cleanly with the ownership structure in {{team_topology}}.

Output format

Provide the deliverable in 4 structured markdown sections:

1. Architecture Boundary & Federation Contract (Domain mapping table and shared dependency matrix)
2. Phased Rollout Schedule (4 distinct phases with prerequisite gates and rollback triggers)
3. Reliability & Blast Radius Controls (Error boundary, fallback UI, and CDN caching patterns)
4. Operational Governance Plan (Deployment autonomy guide mapped to {{team_topology}}) Total length should be between 700 and 1100 words.

Self-review

• Did I define clear fallback behaviors for when a remote manifest fails to fetch?
• Are all items in {{shared_dependencies}} addressed with singleton or multi-version rules?
• Does the plan strictly respect the constraints of {{legacy_monolith_stack}}?