13/10/2026
"No rewrite" is a promise, not a decision.
At the September 30 executive briefing hosted by and Orange & Bronze Software Labs (O&B), a tech leader from the FSI sector asked a crucial question most migration plans assume: "Beyond 'no rewrite,' what actually decides whether we rehost, refactor, or rewrite?"
There are three paths, and each fits a different kind of system:
Rehost, when an application can move to a new Java runtime as it is.
Refactor, when specific parts won't survive the move.
Rewrite, when the domain logic no longer fits the business’ current goals.
Choosing among them is risky. At O&B, we use automated tests to help you decide.
This is part two of our weekly series diving into engineering challenges that the briefing’s Q&A surfaced. Follow us to keep updated 👀