Production OAuth Monitoring for European Carrier Integrations: How to Build Authentication Health Systems That Prevent the 73% Failure Rate During 2026's API Migration Crisis
February 3rd wasn't just another day for carrier integrations. By February 3rd, 73% of integration teams reported production authentication failures following UPS's OAuth migration. Your sandbox testing passed with flying colors. Authentication flows worked perfectly. Rate requests returned clean responses. Then production deployment exposed what most
