BESS

Enables building custom packet processing pipelines by composing small, reusable modules, allowing for tailored networking solutions as highlighted in the README.

Designed to avoid sacrificing speed for programmability, unlike earlier frameworks like Click, making it suitable for performance-critical applications in research and NFV.

Not hardcoded for specific functions; supports user-defined configurations, providing full control over datapath logic without pre-set limitations.

Can be configured by external controllers for dynamic network management, facilitating integration with larger systems as mentioned in the key features.