Custom Azure DevOps banner

With a customer I have today seen the first time that there is a feature of custom message banners in Azure DevOps. This can not be set via the UI but is a command line only option. Documentation can be found here

# List existing banners
az devops admin banner list --org

# Set a banner
az devops admin banner add --org --message "INFORMATION: Network domain updates will occur on September 3" --expiration  2019-09-04 --type  info