Quick Answer
The answer is Azure Private Endpoint, which is the correct choice because it assigns a private IP address from your virtual network to the Azure Blob Storage account, routing all traffic over the Microsoft backbone network rather than the public internet. This ensures that an on-premises application, connected via VPN or ExpressRoute, can establish a secure connection to Blob Storage without any data exposure to public endpoints. On the AZ-204 exam, this scenario tests your understanding of network isolation and private connectivity options, often appearing alongside traps like Service Endpoints, which still route traffic over the Microsoft backbone but do not provide a private IP and can be bypassed if the storage account’s firewall is misconfigured. Remember the key distinction: Private Endpoint gives a dedicated private IP inside your VNet, while Service Endpoint only extends your VNet’s identity. A simple memory tip is “Private IP, Private Path” — if the question demands no public internet traversal, always choose Private Endpoint.
This AZ-204 practice question tests your understanding of develop for azure storage. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You need to securely connect an on-premises application to Azure Blob Storage without exposing data to the public internet. Which feature should you use?
IP firewall rules on the storage account
Why wrong: Firewall rules use the public endpoint, just restricted.
Azure Private Endpoint
Private Endpoint uses private IP within a VNet, no internet exposure.
Storage account access keys
Why wrong: Access keys are shared secrets and not recommended for on-premises.
Shared access signature (SAS) with stored access policy
Why wrong: SAS still uses the public endpoint.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Private Endpoint
Azure Private Endpoint uses a private IP address from your virtual network to connect to Azure Blob Storage over the Microsoft backbone network, ensuring traffic never traverses the public internet. This provides a secure, private connection for on-premises applications via VPN or ExpressRoute, meeting the requirement to avoid public exposure.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
IP firewall rules on the storage account
Why it's wrong here
Firewall rules use the public endpoint, just restricted.
Azure Private Endpoint
Why this is correct
Private Endpoint uses private IP within a VNet, no internet exposure.
Related concept
Read the scenario before looking for a memorised answer.
Storage account access keys
Why it's wrong here
Access keys are shared secrets and not recommended for on-premises.
Shared access signature (SAS) with stored access policy
Why it's wrong here
SAS still uses the public endpoint.
Common exam traps
The trap here is that candidates often confuse IP firewall rules or SAS tokens as providing private connectivity, when in fact they only control access or authentication but still route traffic over the public internet.
Detailed technical explanation
Azure Private Endpoint leverages a network interface (NIC) in your VNet with a private IP from your address space, mapping to the storage account's resource via Azure Private Link. Traffic is encapsulated using the Microsoft peering service, bypassing the internet entirely, and is secured by network security groups (NSGs) and route tables at the subnet level. In a hybrid scenario, an on-premises app can connect via a site-to-site VPN or ExpressRoute to the VNet, then use the private endpoint for blob access without any public endpoint exposure.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Develop for Azure storage — This question tests Develop for Azure storage — Read the scenario before looking for a memorised answer..
The correct answer is: Azure Private Endpoint — Azure Private Endpoint uses a private IP address from your virtual network to connect to Azure Blob Storage over the Microsoft backbone network, ensuring traffic never traverses the public internet. This provides a secure, private connection for on-premises applications via VPN or ExpressRoute, meeting the requirement to avoid public exposure.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This AZ-204 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-204 exam.
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