PrimeTelecom had been operating on ETIS, a PHP 5 + jQuery admin system built in 2010. It still worked, in the sense that it didn't crash. But customer lookups took 8 to 12 seconds. Operators tabbed through six separate tools, each with its own login. When network events happened, the ops team found out from customer phone calls.
The mandate: build a replacement that the operations team actually wants to use, migrate incrementally without taking the old system offline, and deliver measurable productivity gains within the first quarter of rollout.