There are a number of tasks involved in designing a Network Service (NS). In order to understand what a network service is, we first need to look at what it consists of. What is a Network Service? A Network Service, is a collection of VNF and/or PNF that will be used by Telco Network Cloud Orchestration (TNC-O) to instantiate either a complete end-to-end service for a customer or, a significant portion of a customer’s service. »