YANG Data Models are a standardized data modeling language used to define configuration and operational state data for network devices and services. Developed by the IETF, YANG is used with network management protocols such as NETCONF and RESTCONF to enable structured, automated network configuration and monitoring.
YANG models describe hierarchical data structures using a clear, human-readable syntax. These models support data validation, versioning, and reuse, making them essential for modern network automation, service provisioning, and telemetry. YANG is widely used in carrier, enterprise, and data center networks, especially in environments leveraging model-driven programmability.
- Define configuration and state data for network elements
- Support automation through NETCONF, RESTCONF, and gNMI
- Enable interoperability across multi-vendor network environments
- Facilitate network service modeling and telemetry
- Integrate with tools like pyang, ConfD, and OpenConfig
Professionals with expertise in YANG Data Models typically work in network engineering, automation, or DevOps roles. They are expected to design, validate, and maintain YANG modules, interpret RFCs and IETF standards, and collaborate with software and infrastructure teams to implement model-driven solutions. Knowledge of related technologies such as YIN, JSON, XML, and network telemetry is often required. Mastery of YANG is particularly valuable in organizations adopting intent-based networking or deploying software-defined networking (SDN) architectures.