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.