使用Azure共享访问签名（SAS）是否会产生美元成本？

Hey! Let’s clear up this confusion around Azure Shared Access Signature (SAS) tokens and costs once and for all.

Short Answer Up Front #

The SAS token itself does NOT incur any direct charges. It’s just a secure, limited-access authorization tool—think of it as a "keycard" that lets someone access specific parts of your Azure resources without handing over your full account credentials.

What Will Cost You (Billed in USD) #

Any operations you perform using the SAS token will trigger standard Azure resource usage fees, just like if you accessed the resource with your account key. Examples include:

• Reading, writing, or deleting blobs in a storage account
• Sending or receiving messages in an Azure Queue
• Listing contents of a storage container
• Accessing metrics or logs tied to the resource

These costs follow the exact same pricing model as the underlying Azure service. If you’d pay for that operation with your account key, you’ll pay the same amount when using a SAS token.

Quick Tips to Avoid Unexpected Charges #

• Always limit the scope of your SAS tokens (e.g., restrict to specific resources, set short expiration times) to prevent unintended usage that could rack up costs.
• If you’re using a free-tier Azure resource (like the 5GB of free blob storage), SAS token usage counts against those free limits—you’ll only get billed once you exceed them.

内容的提问来源于stack exchange，提问作者Scooby