What key change makes Junos Evolved more efficient than Junos OS?

The efficiency of Junos Evolved compared to Junos OS is largely attributed to the choice of operating system. By replacing FreeBSD with Linux, Junos Evolved leverages the robust performance and scalability features that Linux provides. This change allows for better resource management, improved performance, and enhanced capabilities such as containerization and orchestration, which are pivotal in modern networking environments. Linux is designed to handle numerous processes and tasks concurrently, making it more suitable for the demands of virtualized and cloud-native infrastructures that Junos Evolved aims to support.

The transition to Linux also aligns with trends in the industry where many networking applications and services are being designed to run on Linux for better compatibility and easier deployment in diverse environments. These factors altogether contribute to the overall efficiency improvements of Junos Evolved.