Modernization Slices: Turning a Monolith into a Migration Plan

The planning gap

Executives approve modernization; engineers face a monolith. Between the mandate and the code there's a missing artifact: a plan that says what to move, in what order, and how.

Slicing the app

CodeIQ Pro analyzes the dependency structure in the knowledge graph and carves the application into slices — coherent units small enough to migrate independently. On one real app that produced 318 of them.

A strategy per slice

Not every slice should be handled the same way. From each slice's graph metrics — size, fan-in, whether it touches PII — CodeIQ Pro recommends a strategy:

• Rewrite for small leaf slices with few dependents.
• Strangler-fig for large, heavily-depended-on slices.
• Encapsulate & wrap for the shared, sensitive core you shouldn't touch yet.

Ordered for safety

The slices are sequenced least-depended-on first, with risk and PII flagged. What was an intimidating monolith becomes a backlog: a prioritized, de-risked list of migrations your team can actually execute — and your leadership can actually track.