— Whitepaper
## Start with the inventory A credible migration plan begins with a complete interface inventory: senders, receivers, message volumes, adapters, and the business process behind each flow.
## Assess before you rebuild - Which mappings can be reused as-is - Which flows are dead traffic and can be retired - Which interfaces need a redesign because the target pattern is API-led - Where custom adapter modules block a like-for-like move
## Test coverage and cutover Define regression test sets per business process, not per interface, and plan the cutover in waves so that a failed wave never stops the business.
## Download The editable DOCX checklist is available on the whitepapers page.