> In my previous place we had the monolith on cloud run.

How was managed a new deployment ? Could anyone push a new version ? Did it go through CI/CD ?

And about CI/CD, did you have something vaguely resembling it ? Was it all hosted ?

> Anything more complex than the above would to me be a bad smell - unless there were some very good reasons.

Yes, you would probably not need something more complex in that case, but then again, some companies with 5 devs start with microservices