5. Secure, Monitor, and Troubleshoot Azure Solutions (20–25%)

Every architecture built in Phases 2–4 shares two unglamorous dependencies: credentials that must not leak, and behavior that must be visible. This final content phase covers the cross-cutting layer from the 1.1.1 anatomy — Key Vault and App Configuration guarding what the system knows, OpenTelemetry and KQL revealing what the system does.