Hi @Lukas Buser (s) ,
each Azure subscription has is quotas for different Azure services.
Depending on the type of Azure subscription it is a hard hard quota limit, for instance for Free Trial subscriptions.
https://learn.microsoft.com/en-us/azure/azure-resource-manager/management/azure-subscription-service-limits#managing-limits
You an get the details of the usage and the quotas in the Azure Portal for each subscription:
For vCPUs for Azure Compute resources there are quotas per region in Total and per VM SKU.
For instance Total Regional vCPUs
= 20
For each VM Series (e.g. Ev3 Series/Family) = 20
You have to take care for both quotas, the Total and the VM Family quota per region, as they are working together and related to each other.
Depending on the type of Azure Subscription and the Azure Resource you could increase the quota by yourself or via Azure Support.
I have no Azure for Students subscription. So I am not able to give you an answer about the costs. But you should be able to get the information which Azure resources are included in the Azure Students subscription and which resources are charged in addition.
https://azure.microsoft.com/en-gb/offers/ms-azr-0170p/
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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten