What is the primary advantage of using the Azure client library over the REST API for accessing a storage account?

The primary advantage of using the Azure client library over the REST API for accessing a storage account is convenience. The client library abstracts much of the complexity associated with directly working with the REST API by providing a higher-level interface that simplifies operations. This means that developers can perform common tasks, such as uploading, downloading, and managing data, with less code and less need for handling lower-level details like HTTP headers, serialization, and response parsing.

Additionally, the client library often includes built-in functionality for error handling, authentication, and retries, allowing developers to focus on their applications without worrying about the intricacies of making and managing HTTP calls. This can significantly speed up development time and reduce the chance of errors.

In contrast, while cost, availability, and localization are important factors in choosing services, they do not specifically highlight the user experience and ease of use that the Azure client library provides. Hence, convenience stands out as the primary advantage in this context.