IT networking is the construction, design, and use of network equipment to allow groups of computing devices to exchange data with one another, over both wired and wireless networks. The market covers networking hardware, software, and services, including virtual networks, servers, network management and security. The backbone of modern IT networking is the physical hardware required for communication between devices on a computer network. In 2017, the revenue from Ethernet switch sales globally amounted to nearly 26 billion U.S. dollars. The leading vendor, Cisco Systems Inc, controlled more than 50 percent of the global Ethernet switch market worldwide.
Two growing areas of IT networking are less bound by specific IT networking hardware, relying instead on software transmissions of data. The software-defined networking market is forecast to reach 13.8 billion U.S. dollars worldwide in 2021. The more established virtual private network (VPN) market is expected to reach over 31 billion U.S. dollars in size by 2021, with the majority of its revenue derived from multiprotocol label switching (MPLS) backbones run by large network carriers. MPLS supports the creation of scalable, protocol-independent networks that offer improved reliability and performance.
In terms of services, the worldwide network management market is projected be worth over 6 billion dollars by the end of 2018. An essential component of the management and functionality of global networks is the centralization of critical network services. Assisting in this are network infrastructure technologies such as DNS, DHCP, and IPAM (together known as DDI). The global DDI market has seen continuous growth, surpassing the billion U.S. dollar mark in revenue generation during 2018.
In the case of network security, the revenue number for corporate web security market worldwide is projected to rise to about 5 billion U.S. dollars by 2021. Endpoint security sales are also expected to increase to over 8 billion U.S. dollars by 2021.
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In the following 6 chapters, you will quickly find the 46 most important statistics relating to "IT networking".