This IDC study provides evidence that the second half of 2015 was a period when cloud computing strongly asserted itself over the datacenter networking market. Deployments in the public cloud expanded 42.4% in the second half of 2015, generating revenue of almost $1.7 billion. Private cloud deployments also grew, albeit at a 12.5% rate, and were worth $535.5 million. While the largest segment remained the traditional datacenter (noncloud), which was worth $4.7 billion, it declined 4.3% on an annualized basis."Enterprise datacenters and the applications that inhabit them are not about to go the way of the dinosaur. As long as workloads remain in those datacenters, there will be a need for datacenter networking in enterprises worldwide," said Brad Casemore, director of research, Datacenter Networking, IDC. "Nonetheless, we are seeing that growth in datacenter networking increasingly can be found in the public cloud and especially among the hyperscalers and other large cloud service providers that are emulating their best practices."