Hey, I haven't managed to find anything similar to how you have separate flow domains with

projects

in prefect 1.0, in prefect 2.0. Is that something that exists and I'm just missing it? I see workspaces but that's a different paradigm..

Tags are supposed to provide the same, or even better separation between projects - e.g. assigning a tag on a deployment allows you to not only filter for that tag in the flow run view but also to run separate work queue agents for that specific tag

Right, but that would mean having to deploy tag specific infrastructure too, right? Like a queue per tag? I just ask because I have all my flows separated into different repos relating to the project they reside in.

not necessarily - you can have generic tags for work queues - say "dev" and "prod", and then additional project-specific tags say "ml-project-Q3-2022"