5 advantages of SD-WAN: briefly summarized
Trusted Advisor for IT & Telecommunications Sourcing
Five key advantages of modern SD-WAN networks
Why SD-WAN is the future of Site Connectivity
Five advantages at a glance: independence, security, cloud performance and flexibility.
SD-WAN is the further development of classic corporate networks such as MPLS or VPN. The technology enables flexible, secure and cost-efficient connections via existing infrastructures, perfect for the cloud era.
In a nutshell:
- Independence from the underlay: use of any Internet connection, whether fibre, MPLS or mobile communications.
- Security through SASE: individual authentication and modern Zero Trust concepts.
- Cloud optimized: intelligent routing ensures maximum performance of SaaS applications.
- The same conditions for everyone: stable connection for office, home office and mobile users.
- Flexible and scalable: new locations can be quickly integrated and expanded.
The solution: SAVECALL supports companies in the planning, introduction and optimization of SD-WAN networks, for greater efficiency, security and growth.
What this article covers: Why SD-WAN is considered the evolution of MPLS and VPN, which five advantages define the technology, and how flexible and secure your current corporate network really is compared to a modern SD-WAN.
Table of contents
- Why SD-WAN is the future of Site Connectivity
- Advantage 1: Independence of the underlay network
- Advantage 2: Security through SASE
- Advantage 3: A perfect network for the cloud
- Advantage 4: Same conditions for all users
- Advantage 5: Flexible and adaptable
- How SAVECALL supports you
- Conclusion
- Frequently asked questions about the advantages of SD-WAN
Why SD-WAN is the future of Site Connectivity
Point-to-point networks, Internet VPN, MPLS: there have always been new trends in the field of corporate networks in the past. SD-WAN networks, on the other hand, are a real evolution in the field of Site Connectivity. With its innovations, SD-WAN technology is now adapting better and better to the requirements of companies. Examples include security, the availability of applications and the diversity of end devices.
1st advantage: The independence of the underlay network
As with Internet VPN, SD-WAN is a private network within which data is exchanged via encrypted “tunnels”. Regardless of whether it is a dedicated Internet line, MPLS line or mobile Internet, as long as there is an IP connection, SD-WAN can use it. An SD-WAN network can therefore be rolled out in the remotest corners of the world without having to invest in expensive infrastructure such as dedicated lines. SD-WAN is based on the existing infrastructure. This means that SD-WAN is cost-efficient and quick to set up.
2nd advantage: Security through SASE
Security through SASE means that the user is authenticated at the edge of the network and not in the core. And this authentication is not done for all areas, but on a case-by-case basis, with a list of permissions that determine which applications can be used or seen. SD-WAN can be perfectly combined with a SASE model; this is one of the main differences between SD-WAN and Internet VPNs.
3rd advantage: A perfect network for the cloud
Companies of all sizes are moving inexorably towards the cloud. A user doesn’t care where the SaaS solution is located as long as they can use it. SD-WAN optimizes the data flow. Network traffic is routed in such a way that the most efficient path is always taken.
4th advantage: SD-WAN creates the same conditions for all users
Even before the pandemic, there were employees who worked from home or on the road. The problem was that these early VPNs created a two-tier society within the company. The connection of a traveling sales employee was nowhere near as good as that of his colleague at the company headquarters. With today’s broadband or mobile connections, users outside the office often have access to equivalent bandwidths. This means that an SD-WAN can provide remote or mobile employees with the same resources as everyone else in the organization.
5th advantage: SD-WANs are flexible and adaptable
As SD-WAN is not tied to a fixed infrastructure, it can quickly adapt to new requirements and specifications. For example, company takeovers can be realized quickly. New locations can be easily integrated into the company network with SD-WAN. SD-WAN gives your network the opportunity to grow with your requirements. It can change and develop in line with customer requirements and market conditions, just like your business. The benefits of SD-WAN are too numerous to list. As the above shows, the decision to adopt SD-WAN doesn’t have to be a purely technical one.
How SAVECALL supports you with SD-WAN
SAVECALL supports companies in the planning, introduction and optimization of SD-WAN networks, for greater efficiency, security and growth. Rather than evaluating individual providers in isolation, SAVECALL compares suitable SD-WAN and SASE solutions for your sites and budget in a vendor-neutral way. This means the decision for SD-WAN doesn’t have to rely on in-house technical expertise alone.
Conclusion
The benefits of SD-WAN are too numerous to list in full: independence from the underlay, integrated security through SASE, optimized cloud performance, equal conditions for all users and high flexibility for new sites.
As the above shows, the decision to adopt SD-WAN doesn’t have to be a purely technical one. Use our free price and availability check for more information on your location.

Written by
Frank Frommknecht
Key Account Consultant, SAVECALL
Has supported companies for over 20 years in selecting and optimizing their connectivity solutions. His focus: making complex telecommunications understandable from the customer’s perspective and strategically finding the right solution.
Why
Telecom & IT sourcing. Worldwide. Carrier-independent.
Selection & operation of worldwide connectivity & cloud infrastructure. Without vendor risk & unnecessary costs.
- 80+ carriers worldwide
- One point of contact
- One SLA
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25+
years of experience
40+
Employees
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Partner
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Sources
- SAVECALL: SD-WAN for businesses
- SAVECALL: Enterprise IT security (SASE)
- Gartner: glossary definition “Secure Access Service Edge (SASE)”, Gartner Inc.
Frequently asked questions about the advantages of SD-WAN
The biggest advantage is independence from the underlay network: SD-WAN uses any available IP connection, whether a dedicated Internet line, an MPLS line or mobile Internet. This lets an SD-WAN network be rolled out cost-effectively and quickly even at remote locations, without investing in expensive dedicated lines. SD-WAN builds on existing infrastructure instead of replacing it, which makes adoption significantly simpler than with classic MPLS.
SD-WAN can be perfectly combined with a SASE model. The user is authenticated at the edge of the network rather than in the core, and on a case-by-case basis using a list of permissions that determine which applications may be used. This is one of the main differences from classic Internet VPN, which often grants broad network access instead of granular, application-based control.
SD-WAN optimizes the data flow by always routing network traffic over the most efficient available path. As companies of all sizes increasingly rely on SaaS and cloud solutions, and users don’t care where an application is physically located, this intelligent routing delivers noticeably better performance for cloud applications than classic, statically routed networks.
Early VPN solutions often created a two-tier society: traveling or home-office employees had significantly worse connections than colleagues at headquarters. With today’s broadband and mobile connections, equivalent bandwidths are often available outside the office too. SD-WAN uses this to give remote or mobile employees the same resources as everyone else in the organization.
Because SD-WAN is not tied to a fixed infrastructure, it can adapt quickly to new requirements. New locations can be integrated into the corporate network without complications, and company takeovers can be realized quickly from a technical standpoint as well. SD-WAN grows with the company’s requirements and evolves in line with market conditions and customer needs, instead of dictating a rigid infrastructure.
SAVECALL supports companies in the planning, introduction and optimization of SD-WAN networks, for greater efficiency, security and growth. Rather than evaluating individual providers in isolation, SAVECALL compares suitable SD-WAN and SASE solutions for your sites and budget in a vendor-neutral way. This means the decision for SD-WAN doesn’t have to rely on in-house technical expertise alone.


