Internet-Based Connectivity as a Replacement for, or Complement to, Traditional WAN Solutions

Internet-Based Connectivity as a Replacement for, or Complement to, Traditional WAN Solutions

Many companies have traditionally used private corporate networks, such as MPLS or dedicated capacity links, to connect their offices and data centers. These solutions have long been stable and reliable, but they are often difficult to adapt when business needs change.

Today, companies increasingly operate in cloud-based systems, have employees in multiple locations, and use applications that require fast and stable real-time connectivity. As a result, older and more rigid networking solutions are not always sufficient.

For this reason, more and more organizations are choosing to use internet-based connections, either as a replacement for, or as a complement to, traditional corporate networks. Cost savings may occur, but they are rarely the primary driver.

At the same time, a standard internet connection is not sufficient in environments where the business depends on high availability and consistent performance. Business-critical systems require stable capacity, low latency, and predictable quality. Therefore, the internet solution needs to be specifically designed for enterprise use, with clear requirements for performance and reliability.

Because the Internet is an open and public infrastructure, it also places higher demands on security and control. As a result, the focus is shifting away from the connection itself and increasingly toward how traffic is protected and managed. This may involve encryption, traffic segmentation, monitoring, and active traffic steering to ensure that important applications are always prioritized.

The key is to first understand the organization's actual needs. By clearly distinguishing between what is business-critical and absolutely necessary, and what is desirable but not essential, it becomes possible to create a solution that is secure, stable, and cost-effective—without making it more complex than necessary.

FAQ: Common Questions About Internet as an Enterprise Service in SD-WAN Environments

What is meant by Internet as an enterprise service?

Internet as an enterprise service refers to a business-grade internet connection with higher requirements for availability, performance, security, and support than a consumer subscription. The service is often delivered with an SLA, monitoring, and the option for redundancy.

How do enterprise services differ from standard broadband?

Enterprise services typically offer:

• Guaranteed or prioritized bandwidth
• Contracted availability (SLA)
• Proactive monitoring and faster fault resolution
• Options for redundant connections
• Optimization for business-critical applications

What is SD-WAN and why is it relevant for internet connectivity?

SD-WAN is a technology that intelligently routes traffic across multiple network connections, such as fiber, xDSL, and mobile connectivity. This makes the internet connection an active part of the company's WAN, rather than just an "exit to the Internet."

Does SD-WAN mean expensive corporate links are no longer needed?

No. SD-WAN does not eliminate the need for stable and secure connections. However, the technology allows organizations to combine different types of internet access and use them more efficiently. The quality of the underlying internet connections remains crucial.

Can multiple internet providers be used with SD-WAN?

Yes. This is one of the major advantages. With SD-WAN, traffic can automatically be routed between different providers to achieve:

• Higher availability
• Reduced risk of outages
• Improved performance depending on the application

How does SD-WAN affect reliability requirements?

SD-WAN improves perceived reliability through automatic failover and load balancing. However, for this to work optimally, enterprise-grade internet connections with known characteristics and stable quality are required.

Is security weaker when the Internet is used as a WAN?

Not necessarily. Modern SD-WAN solutions include built-in encryption, firewall functionality, and support for secure traffic management. Security depends on:

• How the service is designed
• Which security features are included
• How the internet connections are protected and monitored

What should be considered when choosing internet connectivity for SD-WAN?

Key factors include:

• Stability and low latency
• Options for redundancy
• Fast fault resolution
• Geographic availability
• Compatibility with the chosen SD-WAN solution

Is an SLA still needed if you have SD-WAN?

Yes. SD-WAN can mitigate the effects of disruptions, but it does not replace the need for an SLA. A clear SLA ensures:

• Predictable service quality
• Fast support during incidents
• Clear responsibilities between parties

How does Internet as an enterprise service fit into a cloud strategy?

Very well. As more applications move to the cloud, the internet connection becomes business-critical. SD-WAN can prioritize cloud traffic, but it requires an internet connection capable of handling high and consistent loads.

Is mobile connectivity a realistic option?

Yes, as a complement. 4G/5G is often used in SD-WAN solutions for:

• Backup during outages
• Rapid deployment at new locations
• Temporary or mobile offices

Summary

SD-WAN changes how companies use the Internet, but it does not make it less important. On the contrary, Internet as an enterprise service becomes a central part of the company's network infrastructure, where quality, security, and availability are critical to business operations.