Is there any problem with separating the ML into a different service/machine, and everything else together? Then you can treat the ML in the same way you treat

Is there any problem with separating the ML into a different service/machine, and everything else together? Then you can treat the ML in the same way you treat an external service, or your DB or Redis (if external). While no longer a pure monolith that certainly doesn't qualify as a microservices architecture. Note: no idea what I'm talking about, I'm genuinely curious if that's a valid solution.