What is a primary concern when migrating to a cloud service model?

Data security issues are indeed a primary concern when migrating to a cloud service model. When organizations move their data and applications to the cloud, they often hand over control of this critical information to third-party service providers. This shift raises questions about how data is protected from unauthorized access, breaches, and loss. Enterprises must scrutinize the cloud provider's security protocols, compliance with regulations, data encryption methods, and incident response plans.

In addition, the multi-tenant environment typical of cloud services, where multiple clients share the same resources, can heighten the risk of data exposure or vulnerabilities. Organizations must ensure that sensitive data is properly segregated and safeguarded in such environments.

While the other options highlight concerns that may arise during migration—like service quality, operational costs, and vendor relationships—the security of data remains the foremost priority for many organizations as they transition to cloud solutions. Understanding and addressing these data security issues is crucial for a successful and secure migration to the cloud.