Hello @태준 이 Thank you for reaching out to us on Microsoft Q&A platform. Happy to answer any questions you may have!
To answer your question "Official expiration date of the Azure Enterprise Reporting API" is October 2023 for EA customers.
We want to make sure customer(s) can successfully migrate over to the new APIs and let us know if you need anything else.
Please refer to - Migrate from Azure Enterprise Reporting to Microsoft Cost Management APIs overview - Microsoft Cost Management | Microsoft Learn should be a good starting point.
Hope this answers your question. Feel free to write back to us if you have any questions!
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