A Microsoft offering that enables tracking of cloud usage and expenditures for Azure and other cloud providers.
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Yes you are correct, It can take up to 24 hours for your subscription to get reactivated after you pay your balance.
Please note: After your subscription is reactivated, there might be a delay in creating or managing resources. If the delay exceeds 30 minutes, contact Azure Billing Support for assistance. Most Azure resources automatically resume and don't require any action. However, we recommend that you check your Azure service resources and restart them if, if necessary.
Reference: https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/subscription-disabled
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