Increase in cost of our subscription

Hello Lindsy may,

In order to understand why the cost of your Azure subscription is increasing, especially concerning your storage account, you can take several steps,

Identify the meters that are used to calculate your bill: Meters are used to track the amount of data stored in the account (data capacity) and the number and type of operations that are performed to write and read data. There are also meters associated with the use of optional features such as blob index tags, blob inventory, change feed support, encryption scopes, and SSH File Transfer Protocol (SFTP) support. For more information, see How you're charged for Blob Storage.

For example, navigate to Subscriptions > select the relevant subscription > click on Cost Analysis > then select View. From there, choose Cost by Resource and customize the date column to reflect the specific time interval during which you observed a high cost. In the Resource Type column, expand the Storage Account resource to identify the specific meter responsible for the charges, as illustrated in the second image.

Understand the price of each meter: Make sure to use the appropriate pricing page and apply the appropriate settings in that page. For more information, see Finding the unit price for each meter. Consider the number of operations associated with each price.

Estimate the cost of capacity and operations: You can model the costs associated with data storage, ingress, and egress by using the Azure pricing calculator. Use fields to compare the cost associated with various regions, account types, namespace types, and redundancy configurations. For certain scenarios, you can use sample calculations and worksheets available in Microsoft documentation. For example, you can estimate the cost of archiving data or estimate the cost of using the AzCopy command to transfer blobs.

For more information kindly check Cost Optimization , how to use cost analysis, Understand the full billing model for Azure Blob Storage,

After identifying the cost and associated meter to understand how charges have been incurred, you can further investigate the source of the transactions or operations. To do this, enable Diagnostic Settings (Classic) on the relevant Storage Account. Once enabled, you can access the logs to identify details such as the source IP address and source URL, providing greater visibility into the origin of the activity.

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