Azure DevOps isn't a live integration today, even though its configuration fields exist in Team Settings.
What it is
If a team's provider connection were Azure DevOps, its Data Source section would show two free-text fields — Project and Team, both entered as raw IDs rather than picked from a list like Jira or GitHub. But you can't actually create that connection: Connected Apps only supports linking GitHub or Jira accounts personally, and Azure DevOps shows as coming... there — clicking it opens a waitlist instead of starting a connection. Without a linked Azure account, it never appears as an option under a team's Organization field, so this section is unreachable in the current product.
What to do about it
If your organization needs Azure DevOps, joining the waitlist from Connected Apps is the only current path — there's no workaround through Team Settings. For the two providers that do work end-to-end today, see Connect a Team to Jira and Connect a Team to GitHub.