Stopped up to $1M a day in lost revenue
Problem
D365 ERP failed every time a promotion drove peak volume. The workaround was to shut off inventory flows and clean up by hand afterward.
What I did
Pulled the ERP admins off the ticket queue, moved vendors from feature work to performance work, and drove the root cause across IT, the business and vendors.
Result
Stable under peak load in 90 days. Promotions ran with every system on, and the business trusted IT again.