An Internet Exchange (IX) or Internet Exchange Point (IXP) is a physical infrastructure which lets Internet service providers (ISPs), content delivery networks (CDNs), and other network providers exchange Internet traffic with one another, typically on a cost-neutral basis. Being connected to the infrastructure allows each network to connect to other networks and share traffic (also known as “peering”). This reduces costs for the networks because they do not need to pay for transit on all of their Internet traffic. Having direct access to the infrastructure and to the networks you want to peer with reduces latency by reducing the length of the path that traffic needs to travel. In the end, an IX increases the resilience of the Internet by providing many more redundant routes for traffic, allowing congested routes to be avoided. Watch a video explaining what an Internet Exchange is.