In a datacenter or corporate network, which term is used to describe the flow of data between the internal network and the wider Internet or different datacenters?
North-South traffic refers to the patterns of data that travel in and out of a datacenter or between internal networks and the Internet or other remote networks. This flow is commonly observed in client-server interactions where clients are on the Internet or outside the local network. Southbound APIs and Northbound APIs are terms associated with SDN (Software-Defined Networking) and describe the interfaces that allow the SDN controller to communicate with the data plane and the application layer, respectively, and do not specifically refer to traffic flows. Core traffic is a term that might seem related, but it does not specifically correspond to the established naming of North-South or East-West traffic patterns.
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What exactly is North-South traffic?
What is the difference between North-South traffic and East-West traffic?
What is SDN, and how do Southbound and Northbound APIs function within it?