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Replacing a legacy system without a day of downtime
A big-bang cutover concentrates all the risk into one weekend. Phased migration spreads it into small, reversible steps — slower on paper, faster in practice.
Resultados
- Route traffic through a facade both systems sit behind
- Move one capability at a time, starting with low risk
- Dual-run and reconcile before switching the source of truth
- Keep a rollback for every phase, and rehearse it
- Decommission only after a full reporting cycle has passed
FAQ
Preguntas frecuentes
Is phasing more expensive?+
Slightly more engineering, considerably less business risk. For systems that cannot stop, it is the cheaper option overall.
How long does a full migration take?+
Typically six to eighteen months depending on module count and data quality — with value delivered throughout.
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