@Vidyanath Vemula Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
It sounds like you've already taken several steps to address the issue with surging Data Transfer Out Costs from the AU EAST region.
Based on your scenario I would recommened, please contact Azure Billing and Subscription team would be the best to provide more insight and guidance on this scenario: https://azure.microsoft.com/en-us/support/options/ it's free, and it's the best choice for your scenario, They can provide detailed information on your issue.
Additional information:
Here are a few additional suggestions that might help you identify the root cause and minimize the costs: To find the root cause of the cost surge, you may want to check if there are any applications or services that are accessing your storage account in the AU EAST region. You can use Azure Monitor to track the usage and performance of your storage accounts. You can also check the logs and metrics for your storage accounts to see if there are any unexpected activities or spikes in data transfer.
- Check for Hidden Dependencies: Ensure that there are no hidden dependencies or services that might be causing data transfer to the AU EAST region. Sometimes, services like Azure Traffic Manager or Azure CDN might route traffic through different regions.
- Review Network Configuration: Double-check your network configuration to ensure that all traffic is being routed correctly. Misconfigurations can sometimes lead to unintended data transfers.
- Analyze Logs and Metrics: Use Azure Monitor and Azure Storage Analytics to analyze logs and metrics. This can help you identify any unusual patterns or spikes in data transfer that might indicate the source of the issue.
- Evaluate Firewall Rules: Re-evaluate your firewall rules to ensure that only the necessary IPs have access to your storage accounts. This can help prevent unauthorized access and data transfer.
- Consider Using Azure Cost Management: Utilize Azure Cost Management and Billing to get detailed insights into your data transfer costs. This tool can help you identify specific services or resources that are contributing to the high costs.
Please let us know if you have any further queries. I’m happy to assist you further.
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