The concept of network functions virtualization (NFV), introduced at SDN & OpenFlow World Congress 2012, is bringing about a significant change in the network environment. NFV enables various networking functions to be virtualized on general-purpose servers and thereby makes it easier to create highly reliable networks at low cost. Fujitsu has applied NFV to its FUJITSU Intelligent Networking and Computing Architecture (FINCA), introduced in 2013. This paper explains this concept and describes Fujitsu's initiatives in developing platform technologies to support NFV. It also takes a look at how NFV will affect future networks.