A system that is live is not a system that is used. The expensive gap in any transformation is the last mile, where real people are asked to change how they work. The numbers that prove you crossed it are not the launch date. They are what the floor did after.
Switching 29 stores to a new system on a single date, a quarter of a country's turnover, with zero lost sales, is not a technology achievement. The cutover was the easy part. Making every team trust the new way on day one was planned for months.
A system that is live is not a system that is used.
On another engagement a support backlog that had built up over a month was cleared to two hours. Not with new tooling, with ownership and presence on the floor. Adoption is a human result before it is a technical one, and it is the result we measure.