We do have multi-tenancy in our KF installation for most components except pipelines. Multi-tenancy is implemented by the KF profile controller that creates a namespace for each user that logs into the KF dashboard. In this namespace a user can run Jupyter notebooks, run Katib experiments, run distributed training and serve models. While this is multi-tenant, we don't have authentication integrated yet, please follow this story to get the latest updates on adding auth to ODH:
https://issues.redhat.com/browse/ODH-443