First, you’ll save on OpEx and CapEx by simplifying the traffic forwarding processes across your network.  Segment routing removes network state information from intermediate routers and places path information into packet headers at the ingress node instead. This approach reduces equipment, power, and operational resource requirements along the entire forwarding path networkwide.
Segment routing also helps you meet demands for new services and greater performance easily, affordably, and with consistent user experiences. Achieving these goals requires a network transport solution that provides control, agility, application awareness, and simplified traffic management, which segment routing delivers.
An independent research report from Omdia, Segment Routing in the 5G Era, summarizes the top reasons network operators are adopting segment routing.
Reduced operational and capital expenses
Improvements in network scalability and availability
Support for per-service policies, committed or deterministic service-level agreements (SLAs), and network slicing
Greater flexibility to offer differentiated, value-added services
The ability to deliver reliable mobility services, including 5G and Internet of Things (IoT) connectivity
Segment routing becomes especially significant as the industry moves toward assured network slicing, which allows virtual, isolated logical networks to run on the same physical network infrastructure. Each slice can be placed onto dynamically created segment-routed paths with the ability to meet differentiated, custom application and subscriber requirements for quality of service.