OTP infrastructure migration, no missed logins.
A tier-one Gulf bank was losing customers at sign-in. Single-channel SMS OTP failed on roaming subscribers and during regional throughput spikes — and the support queue was filling with locked-out users.
Migration to a multi-channel OTP fabric on BroadNet: SMS primary, WhatsApp Authentication fallback, voice as last resort. Per-route latency budgets and operator-level retries handled inside the platform, not the app.
Scope: one tier-one Gulf bank's OTP traffic, 5M+ a month. Baseline: its previous single-channel SMS OTP. Period: the first month after migration.
