Which NetApp product allows a customer to clone production data to a public cloud for testing?

Cloud Volumes ONTAP is the correct answer because it provides the capability to create fully functional clones of production data stored in a public cloud environment. This feature is particularly useful for testing and development purposes, enabling organizations to replicate their production data efficiently without the need for additional on-premises storage resources. The cloned data remains accessible and can be used in a non-disruptive manner, ensuring that teams have the necessary resources for testing while maintaining the integrity of the production environment.

This functionality supports a number of operational scenarios, including application testing, data analysis, and training, thereby enhancing the overall flexibility and efficiency of managing data in a cloud-based setup. The ability to easily create and manage these clones helps organizations accelerate development cycles and improve the quality of their applications.

In contrast, the other options serve different functions within NetApp's product suite: Cloud Sync is designed primarily for data synchronization between on-premises and cloud environments, Cloud Volumes Service focuses on delivering block storage in the cloud, and Cloud Tiering is meant for moving infrequently accessed data to lower-cost storage tiers. While these products have their valuable roles, they do not specifically enable the cloning of production data for testing purposes in the same way that Cloud Volumes ONTAP does.