Hi @Cosmina Alexandra Jelea (RO) ,
Thanks for contacting Microsoft Q&A platform.
Azure Automation Update Management is a service in Microsoft Azure that helps you manage operating system updates for your Windows and Linux virtual machines (VMs). To use Azure Automation Update Management, you need to set up an Azure Automation account.
And Azure Automation Update Management is an optional service that you can use to centrally manage and automate the update process for your VMs. Whether you use this service depends on your organization's requirements and policies for managing updates.
As per the provided info you might not opted for Azure Automation Update Management, and if you want to enable Azure Automation Update Management you must have an automation account.
Hope this helps you.