Hi @sriram s
Thank you for posting this in Microsoft Q&A.
If you are using a free subscription for your education purposes, you will not be charged any amount for account maintenance after the free trial period ends. However, your free services and quantities expire, you're charged pay-as-you-go rates for any services you're using. You can use the Azure portal to delete the resources for the services that you don't use. If you want to continue using the services after the free trial period ends, you need to upgrade to a paid subscription.
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Thanks,
Navya
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