Basically, Network Function Virtualization (NFV) is a network concept that replaces specialized hardwares (routers, firewalls, load balancers etc) used in classical network architecture with softwares running on servers that does the same jobs.
NFV was defined at 2012 by a group named Industry Specification Group (ISG) within European Telecommunications Standards Institute (ETSI). Industry Specification Group (ISG) was a group that includes the largest network service providers of the world. Now, more than 30 Network Operators and 150 technology providers involving in this group.
The main idea behind Network Function Virtualization (NFV) was the growing network OPEX and CAPEX. They decided to overcome this drawback by using Cloud technologies and virtualization of the current network equipments.
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Benefits of NFV
NFV brings many key benefits to the networking world. These benefits are given below: