Backend-for-Frontend API Patterns for TMS: How European Shippers Can Simplify Multi-Carrier Integration Complexity and Cut Partner Onboarding Time 60% in 2026
Managing 20+ carrier integrations has become a complex puzzle for European shippers in 2026. UPS completed its OAuth 2.0 migration, USPS Web Tools APIs shut down January 25, 2026, and FedEx is retiring SOAP-based endpoints by June 2026. Each carrier migration brings its own authentication requirements, data schemas, and
