With the work of developers and operators in the same work management tool, you will notice that you have a mix of planned and unplanned, often urgent, work in the system. To ensure that urgent work gets the attention and precedence it deserves, you can introduce what is called a fastlane to your sprint board. In the following screenshot, you can see an example of an Azure Board that is set up for fastlaning production issues:

The use of this horizontal split in the board is to only work on tasks in the regular lane when there is no work to be picked up in the fast lane.