VSUEPlugin

Funny thing is that this plugin does not come as part of default UE 4.27 installation.
It exists on marketplace under the name Visual Studio Integration Tools:

So:

  1. Find this plugin on Unreal Marketplace.
  2. Install it from marketplace.
  3. Enable it in UE 4.27 project.
  4. Restart VS to see it working.

Above steps worked for me.