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Between hype and reality: why companies need to take a close look at SD-WAN

Today, the IT infrastructure is the digital nervous system of every company. Flexibility and scalability are crucial in order to remain competitive. However, many decision-makers feel overwhelmed by the multitude of technologies, and it is not uncommon for initial SD-WAN implementations to fail to meet high expectations.

Common problems with classic first-generation SD-WAN solutions:

• Limited functions and lack of network transparency
• Interoperability problems between providers
• Complexity in configuration and optimization
• Lack of robustness for increasing data traffic and bandwidth requirements

In a nutshell:

• Best practice: Rely on next-generation SD-WAN offerings with automation and cloud management platforms.
• Legal obligation: Ensure a resilient infrastructure that meets security, data integrity and compliance requirements.

What is SASE (Secure Access Service Edge)?

A modern framework for network security and consistent access: The threat landscape is constantly growing in the hybrid, cloud-based working world. Traditional security models are no longer sufficient. Secure Access Service Edge (SASE) combines network and security functions in a single architecture. This gives users secure, high-performance access to company resources at all times, regardless of location or device.

However, it is important to note that not all SASE solutions offer the same range of functions. Companies need to carefully consider which components best fit their existing infrastructure and strategy. A lack of integration can quickly lead to interoperability problems. It is therefore important to select a framework that effectively supports operational, compliance and audit requirements.

In a nutshell:

• Standardized cloud services for network and security
• Scalability for distributed users and locations
• Flexibility: single-vendor, dual-vendor or managed SASE approach
• Improved transparency and control through real-time management

Why is the underlay crucial?

SD-WAN and SASE can only be fully effective with a stable foundation. Many companies rely on modern overlay solutions such as SD-WAN and SASE to increase performance, security and flexibility. However, the basis is often overlooked: the underlay network.

Typical problems such as latency, congestion and failures occur when the physical foundation is not strong enough. The result: applications run unstably, risks increase, and investments in modern overlays fall short of expectations.

While MPLS used to be the standard, many companies now rely on Internet connectivity as an underlay. It promises more agility, flexibility and cost efficiency. However, not all Internet services are the same. The actual performance always depends on the quality and reliability of the chosen provider.

In a nutshell:

• SD-WAN performance is only as strong as the underlying underlay.
• Internet as an underlay can replace MPLS, but only with the right providers.
• A well thought-out interaction of overlay and underlay minimizes business risks.

How to choose the right solution

With clear criteria and the right partner, you can avoid making expensive mistakes. The choice of modern network and security solutions such as SD-WAN and SASE promises more performance, security and simplicity. But the reality is that many companies regret their technology purchases as they get lost in a flood of offers, data and promises.

To minimize these risks, you need a structured selection strategy and a partner who can provide guidance. The decisive factors are:

• Reliable partner: Who will support you neutrally and independently in the decision-making process?
• Industry & business objectives: What are your company’s specific requirements?
• Compliance requirements: Which regulatory standards must be met?
• Technological standards: Which solution fits into your existing IT landscape?

In a nutshell:

• Transparency in the jungle of providers and technologies
• Making purchasing decisions with certainty and clarity
• Avoidance of unnecessary costs and risks