Monitoring Added After Deployment Is Not Observability. It Is Archaeology.
Observability is not a monitoring add-on. It is an architectural constraint. Systems built without observability baked in cannot be understood, cannot be governed, and cannot be improved. The OSAF model tells you exactly where your architecture is blind.
Your Architecture Diagrams Are Lying to You
Why architecture diagrams describe a system that no longer exists, and how Observable Architecture uses production telemetry to reveal what is actually running.