Relevant to Colombia's payment infra fragility: Bancolombia outage blocks transfers to Nequi/other banks since Feb 22 (IBM machine failed in maintenance). ~70% of national txns (100M+ /6mo, 600K interbank/mo). Daily USD flows: $50M+ A la Mano + Nequi peaks $100M+. Single-vendor risk in billion-scale retail payments? Details: https://www.bloomberglinea.com/latinoamerica/colombia/caidas...