What is a major challenge associated with public cloud usage?

The correct choice highlights a significant concern surrounding public cloud usage: potential security vulnerabilities. In a public cloud environment, resources are shared among multiple customers, which can lead to increased risks related to data breaches or unauthorized access. Organizations must ensure robust security measures are in place to protect sensitive information because they do not have the same level of direct control over the infrastructure as they would with on-premises solutions.

This focus on security is crucial for businesses, as they need to evaluate the implications of storing their data on servers that could be accessed by others outside their organization. Additionally, reliance on third-party cloud service providers for data security may introduce complexities in compliance with industry regulations and policies, further emphasizing the necessity of understanding and addressing these vulnerabilities in a public cloud context.