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 4.1 billion U.S. dollars worldwide in 2017. The more established virtual private network (VPN) market is expected to reach 70 billion U.S. dollars in size by 2019, 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 projected be worth over 11 billion dollars by 2019. 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, growing to more than 530 million U.S. dollars in generated revenue in 2015.
In the case of network security, the number of information technology vulnerability management units shipped worldwide is projected to rise to about 271,000 in 2018. Endpoint security sales are also expected to increase to 5.8 billion U.S. dollars by 2019.