The hidden cost of legacy platform debt

Platform debt rarely appears as a line item. It shows up as coordination: every release needs three teams, every new hire needs a month of folklore, every vendor conversation starts with “we would, but the core cannot”.

The mistake is treating modernization as a freeze. The work that funded the platform still has to ship. REVNI 360 sequences extraction around contention — the module every squad touches — and keeps a rollback on every increment. The goal is not a cleaner diagram. It is a team that can change the system without calling the original authors.