Microsoft Azure Architect Technologies (AZ-300) Practice Exam 2026 - Free AZ-300 Exam Questions and Study Guide

Encryption is the key measure that ensures the confidentiality of user data in Azure. When data is encrypted, it is transformed into a format that can only be read or accessed by someone who has the appropriate decryption key. This means that even if the data is intercepted or accessed without authorization, it remains unreadable and thus protects the sensitive information contained within it. Azure provides a variety of encryption options, both at rest and in transit, allowing organizations to secure their data effectively against unauthorized access.

Other measures listed, while they play important roles in overall security, do not directly ensure the confidentiality of data. Regular logging helps with monitoring and auditing activities, but it does not protect the data itself from being accessed. Service redundancy focuses on availability and uptime rather than confidentiality. Firewall configuration is essential for controlling network traffic and protecting against unauthorized access, but it does not encrypt the data, which is necessary to maintain its confidentiality.