What is NaaS? Advantages & Challenges of Network as a Service

NaaS (Network as a Service) is a cloud service model in which users lease network services from cloud service providers. The service allows users to operate their own private network rapidly without purchasing hardware or setting up, managing, and maintaining their own network infrastructure. Through the provider's network system, users obtain a safe, secure network environment without needing to invest in firewalls or other security appliances. This is considered a new model with a major impact on enterprise network architecture.

How was NaaS developed?

The Internet began with physical networks built using fiber-optic cables, copper, routers, and switches. Most of them were built by third-party network operators or internal IT teams. These networks comprised a series of physical devices, including switches, routers, firewalls, and software used to govern how these components interact with one another.

However, over time, SDN began gaining popularity and became the predecessor to NaaS. Software-Defined Networking involves using software to manage network traffic and control the operation of network components. In addition, NFV emerged and grew increasingly popular. Accordingly, a network engineer could simply interconnect multiple virtual network nodes and use them to perform the same functions as physical hardware appliances.

With the combination of SDN and NFV, providers can easily deliver NaaS services. At the same time, not all NaaS equipment is entirely virtualized. You can source physical network hardware through a NaaS provider and lease it without being constrained by data center locations.

How NaaS Works

NaaS operates by delivering network services to individuals/enterprises so they do not have to allocate budget toward purchasing, installing, and maintaining network hardware and network infrastructure. In return, tenants pay a monthly or recurring fee to access the provider's network resources.

A NaaS provider can offer its customers a variety of options tailored to the specific needs of different customer groups, such as:

- Managed Services: Subscribing customers pay monthly to use hardware on a subscription basis, while the provider is responsible for operating and maintaining that hardware.

- Hardware Leasing: The provider owns the network hardware and leases it to customers. Customers must install and operate the hardware devices themselves. This is suitable for technically proficient customers.

- Full NaaS Service: With this service, the provider handles everything related to network hardware from A to Z, from installation through operation.

Benefits of NaaS for Cloud Enterprises

IT Simplification and Automation

With NaaS services, organizations can request their providers to continuously release bug fixes and new features, as well as scale network connectivity. Furthermore, they can automate numerous tasks such as onboarding new users and orchestrating network functions like load balancing and bandwidth management.

Enhanced Security

NaaS enables you to integrate network security more effectively. NaaS services deliver both on-premises security and cloud-based security, providing several distinct advantages.

Visibility

NaaS in cloud computing provides proactive network monitoring, sophisticated firewall capabilities, and security policy enforcement across your environment. In addition, you gain advanced firewall and packet inspection capabilities. This combination streamlines the process of observing what is occurring within your network, enabling you to track anomalous activities.

Improved Application Experience

To deliver the application experience customers expect, it is critical that providers guarantee the necessary supporting connectivity—such as access to AI-driven network optimization features to meet customer networking demands. You can also leverage AI to intelligently route web application traffic, thereby minimizing high latency.

Flexibility

NaaS provides high flexibility and customizability; network modifications are executed through software rather than hardware. IT teams can reconfigure their network on demand and collaborate with other teams quickly and efficiently.

Scalability

NaaS services offer greater scalability compared to traditional hardware-based services. You simply purchase additional capacity from the provider instead of purchasing, configuring, deploying, and securing new hardware. You can scale up or down rapidly based on demand.

Access from Anywhere

Because NaaS is a cloud-based service, you can access it from anywhere, on any device, provided there is an Internet connection. This delivers substantial benefits for enterprises with multiple branch offices and remote workforces.

Challenges of Using NaaS Services

Compatibility

NaaS compatibility is limited with legacy systems, requiring you to replace them to ensure interoperability with the NaaS platform.

Aging Data Centers

In many enterprises, mission-critical applications and software still run within on-premises data centers. This makes migrating to a cloud model such as NaaS more difficult.

Vendor Lock-in

Whenever you consume cloud services, you must contend with the risk of vendor lock-in. This leads to dependency on your provider's ecosystem, making switching providers challenging if you have a poor experience with your existing vendor.

NaaS Use Cases

Here are several examples of NaaS use cases:

- Integrating advanced network infrastructure: Implementing standards such as Wi-Fi 6 across the entire enterprise network by having the NaaS provider configure and deploy them.

- Reducing required system maintenance downtime: You can submit a request to your NaaS provider and have them handle updates for you instead of executing them manually.

- Connecting new branch offices rapidly: With NaaS, the service provider can provision all the connectivity you need when establishing a new site, sparing you from time-consuming manual configuration and testing.

Conclusion

Above, Vcloudia has shared comprehensive insights into NaaS—a cloud computing service providing network resources utilized through NaaS providers instead of requiring large capital investments in network infrastructure. This is recognized as an on-trend cloud computing solution chosen by numerous enterprises and individuals in the Industry 5.0 era.

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