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Network as a service (NaaS) brings software-defined networking (SDN), programmable networking and API-based operation to WAN services, and transport, hybrid cloud, multicloud, Private Network Interconnect, and internet exchange points.[1]

Historic definitions focused on fundamental concepts of NaaS, including describing services for network transport connectivity.[2] NaaS also involves the optimization of resource allocations by considering network and computing resources as a unified whole.[3]


The term network-as-a-service (NaaS) is often used alongside other marketing terms like cloud computing, along with terms such as infrastructure as a service (IaaS), platform as a service (PaaS), software as a service (SaaS) and software-defined networking.[2][4]

With the emergence of cloud computing, NaaS has become the transport not only between dynamic collaborators outside of the cloud (an update to the classic enterprise WAN architecture), but also between enterprise resources in private (often multi-tenant) data center facilities (MTDCs) and in the public Cloud Service Providers (CSPs), including the interconnection between all of these in a growing "cloud first" enterprise architecture.

Before the new WAN connectivity patterns, enterprise WAN architectures and consumption models resulting from the adoption of cloud computing and the network programmability focus introduced by SDN, NaaS was sometimes used to describe more traditional network resource-sharing concepts like the provision of a virtual network service by the owners of the network infrastructure to a third party.[5]

Some service models include:[2][6]

See also


  1. ^ Ward, Dave; CEO (2021-01-16). "What is NaaS? & Why NaaS Now?". PacketFabric. Retrieved 2021-05-24.
  2. ^ a b c "ITU Focus Group on Cloud Computing - Part 1". International Telecommunication Union (ITU) Telecommunications Sector. February 2012. Retrieved 16 September 2013.
  3. ^ "Cloud computing in Telecommunications" (PDF). Ericsson. Retrieved 16 December 2012.
  4. ^ Ni, Yong; Xing, Chang Liang; Zhang, Kai (2011-05-21). "Connectivity as a Service: Outsourcing Enterprise Connectivity over Cloud Computing Environment". 2011 International Conference on Computer and Management (CAMAN). pp. 1–7. doi:10.1109/CAMAN.2011.5778899. ISBN 978-1-4244-9282-4.
  5. ^ "Network Virtualisation – Opportunities and Challenges" (PDF). Eurescom. 23 December 2010. Retrieved 16 December 2012.
  6. ^ Ádám Kapovits (14 June 2011). "The role of virtualisation in future network architectures" (PDF). Change Project. Retrieved 16 September 2013.
  7. ^ Ward, Dave; CEO (2021-02-12). "Cloud Routing on Fabrics". PacketFabric. Retrieved 2021-05-24.
  8. ^ "What is VPN? How It Works, Types of VPN". Kaspersky. Retrieved 11 May 2020.
  9. ^ "Network virtualization Enabling novel business models in a dynamic market" (PDF). Nokia Siemens Networks. Retrieved 16 December 2012.
  10. ^ Wang, Anjing; Iyer, Mohan; Dutta, Rudra; Rouskas, George; Baldine, Ilia. "Network Virtualization: Technologies, Perspectives, and Frontiers". North Carolina State University. Retrieved 17 December 2012.