By technical definition, network service is a function supported by the network infrastructure and created to add more value to the business process.
However, the definition and function of network service has been changing and evolving with time and with emerging technologies. While in the past it was associated with connecting things together, today network service is defined in terms of speed, resiliency and redundancy.
With advancements in technology, the function of network services has become more simplified, quick and efficient. Most operations are now fully automated with sophisticated monitoring dashboard replacing the manual management systems. There are multiple mediums for connectivity that can transfer data without any element of security risk.
The network services used in the IT field today has features such as automated path management for improved performance and helps deliver data at minimal cost. The security appliances used are also state-of-the-art and involves foolproof firewalls and other devices.