This guide makes the case that legacy modernisation is no longer just a cost and risk decision. It is the foundational architecture decision that determines whether AI initiatives can reach production.
This guide is structured around the decisions that determine whether a modernisation programme succeeds or stalls: how to sequence migration, map dependencies, design for coexistence, govern the transition, and modernise at the code level.
These are not theoretical frameworks- they are drawn on Merit's internal engineering practice and the expertise of industry specialists embedded in our delivery teams.
