Here's the scenario. We currently use Azure DevOps 2019 Server for all team related work. This also includes our Repos and Build/Release mechanisms. All done on-prem. We are considering move the scrum work to Azure DevOps Services but would like to keep the Repos and B/R portion on-Prem. Would that be doable and still be able to tie workitems to builds, etc?
If not, if we move all of it to the cloud, I am assuming that the build servers will need internet access (probably port 443) so that the builds could happen locally or would we need to those in the cloud as well?