We present in this paper the implementation of the networking part of a Network-as-a-Service (NaaS) architecture based on SDN-enabled NFV using as a basis the OPNFV open framework. This NaaS architecture can be instantiated according to three deployment models allowing application service providers (OTTs) and application services themselves to request specific network services from a network provider within a NaaS model. Therefore, we propose to demonstrate the feasibility of NaaS architecture deployment models with a focus on an “ondemand dynamic model” to highlight the offered dynamicity and easy application-to-network interactions. We have chosen to illustrate the deployment models with a WebRTC OTT application and showcase the on-demand dynamic deployment of virtual network functions, mainly TURN server. Because of time-sensitivity of these communication services, we have relied on container-based (Docker type) instead of virtual machinebased network functions virtualization.