You may want to rename your Azure DevOps Organisation for different reasons. Change in the company name, for example, don’t worry, you can change it. It is vital Communicate with your Organisation that you are planning to change the name as this will have an impact on your URL to access Azure DevOps.
It isn’t just users you need to notify; you also need to schedule a time to update any self-hosted agents plus any other integration you have which talks to your Azure DevOps Organisation.
If you would like to understand different ways to use Azure DevOps there nothing beats a demo data.