Post by QAwerk

Tests passed. Payment failed. Email silent. Auth broken. Standard functional testing tests the app. Not the connections. 5 integration patterns that break in production and slip through standard QA: 🔐 Payment processing → Silent failures, wrong order states, webhook timing issues 🔐 Email delivery → Silent rate limiting, spam classification, delivery delays under load 🔐 Analytics & tracking → Duplicate events, missing properties, ad blocker blind spots 🔐 Authentication → Token expiry mid-session, OAuth edge cases, cross-tab state 🔐 Third-party APIs → Timeouts, schema changes, rate limiting, deprecation Each one tests fine in isolation. Each one breaks in production. The functional testing approach that catches all five: https://lnkd.in/emynKMVR