Which of the following is a key feature of cloud computing?

The presence of remote services for managing and processing data is a fundamental characteristic of cloud computing. In cloud computing, data and applications can be accessed over the internet, allowing users to utilize resources and services without having to manage the underlying infrastructure directly. This is a significant departure from traditional computing models, where resources are often tied to local systems and physical storage.

Remote services enable scalability, flexibility, and cost-effectiveness, as users can adjust their usage based on demand and only pay for what they use. This centralized approach to data management and processing is crucial for businesses and individuals who require seamless access to information from various devices and locations, enhancing collaboration and efficiency.

In contrast, the other statements do not align with the principles of cloud computing. Data being accessible only offline contradicts the core concept of the cloud, which emphasizes online accessibility. Requiring all data to be backed up locally limits the benefits of cloud solutions, which often include cloud-based backup options. Enhancing voice communication capabilities primarily pertains to telecommunications rather than the broader functionalities that cloud computing provides.