Which product provides network controller-level management features?

Cisco DNA Center is Cisco's primary Software-Defined Networking (SDN) controller for enterprise networks, offering comprehensive controller-level management features such as centralized provisioning, policy-based automation, network assurance, and analytics.

Cisco NX-OS is an operating system for Cisco Nexus data center switches, providing device-level configuration and management, not network-wide controller-level management.

Cisco UCS Manager is designed for managing Cisco Unified Computing System (UCS) servers and their associated infrastructure, not for managing broader enterprise network devices at a controller level.

Cisco Identity Services Engine (ISE) is an identity and access control platform that enforces security policies, but it is not a network controller responsible for overall network provisioning and automation.