Hyper-Converged Infrastructure (HCI) primarily promotes integration of which of the following?

Hyper-Converged Infrastructure (HCI) primarily promotes the integration of computing, storage, and network functionalities into a single system. This integration allows organizations to manage resources more efficiently by combining hardware and software into a unified solution.

In an HCI environment, compute resources (such as servers), storage resources, and networking components are virtualized and managed through a common platform, which simplifies deployment and management processes. By offering scalability and flexibility, HCI enables organizations to adjust their resources dynamically according to their workload requirements without needing to address separate physical hardware components.

This integrated approach streamlines operations, lowers overall infrastructure complexity, and can often lead to cost savings in both deployment and management. Thus, the correct answer highlights the comprehensive integration that HCI provides across these crucial IT infrastructure components.