This is the notification which is showing on azure devops
"The trial for this Azure DevOps Server deployment expired on 11/23/2019. An Azure DevOps Administrator can "extend or complete the trial in the Azure DevOps Administration Console."
Suggestions have been given as
"Seems like free trial of devops has been expired.There is no “Update License” option in Azure DevOps Server Administration
Console .If you want to continue to use Azure DevOps Server, please buy Visual Studio Subscriptions first. Visual Studio Subscriptions provides access to developer tools, cloud services, software, support, and training. You could go to here to see if you would
like to buy professional or Enterprise license. For information on any existing subscriptions and product keys, see Visual Studio subscriptions and Visual Studio product keys"
But my question on that is how many users it will cover per subscription if i go with visual studio subscription (either enterprise or professional)