Regarding your queries, the information below will clarify them.
You can extend your Azure subscription by renewing it before the expiration date.
-Azure Reservations: If you have reservations (e.g., for virtual machines), you can set them to automatically renew. In the Azure portal, navigate to Reservations, select your reservation, click on Renewal, and choose Automatically to purchase a new reservation upon expiry.
Automatically renew Azure reservations - Microsoft Cost Management | Microsoft Learn
-Azure Savings Plans: For savings plans, you can also set up automatic renewal. In the Azure portal, search for Savings plan, select it, then choose Renewal and select Automatically renew this savings plan.
Automatically renew your Azure savings plan - Microsoft Cost Management | Microsoft Learn
If you don't set up automatic renewal, your services will continue to run normally, but you'll be charged at pay-as-you-go rates after the expiration. You won't be able to renew an expired plan; instead, you'll need to purchase a new one.
Once your Azure subscription expires, your services will continue to run, but you'll be charged at pay-as-you-go rates. You won't be able to renew an expired plan instead, you'll need to purchase a new one.
For Azure Free Accounts, after your credit expires, your subscription and services are disabled. To continue using Azure services, you must upgrade your account.
Cancelling your Azure subscription is not mandatory. However, if you no longer need the services, it's a good practice to cancel to avoid unnecessary charges.
To cancel your subscription:
In the Azure portal, go to Cost Management + Billing.
Select Subscriptions and choose the subscription you want to cancel.
At the top of the subscription page, select Cancel.
Select a reason for cancellation and, if applicable, turn off auto-renew for any support plans.
If there are running resources, turn them off. Then select Cancel subscription to finalize. After cancellation, billing stops immediately, but it may take up to 10 minutes for the cancellation to reflect in the portal. Your services are disabled, meaning virtual machines are deallocated, temporary IP addresses are freed, and storage becomes read-only. Microsoft retains your data for 30 to 90 days before permanent deletion, allowing you to recover it if needed.
Cancel and delete your Azure subscription - Microsoft Cost Management | Microsoft Learn
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