This story was originally published on HackerNoon at:
https://hackernoon.com/a-new-platform-going-live-is-not-the-same-as-completing-a-migration.
Why migrations should be measured by systems retired, legacy traffic eliminated, and old infrastructure switched off.
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This article argues that migration programs are measured backwards. Moving workloads to a new platform does not create value if the legacy estate remains fully operational, leaving the organization to pay a double-run tax across infrastructure, staffing, licensing, audits, and synchronization.