routing

The answer is yes, and then the real question starts. Asymmetric routing and silent drops punish anyone who treats the routing tables as one flat list.

Trace the route and return path before changing rules. First establish whether the failing connection uses IPv4, IPv6 or a private service endpoint.

Routing rots because orgs change faster than configs. The senior answer treats ownership as data resolved from a catalog at fire time, with drift detection on the routing itself.

Without one, every team implements its own retries, its own key handling, its own logging policy, and nobody can answer what the company spends or what a model change would break.

A model provider is a single dependency with a shared failure domain across every customer they have. Treating it like a database you cannot fail over from is how a product goes down for four hours.