SD-WAN in 2026: AI, sovereignty, and Post-Quantum security redefine the enterprise network

The guide identifies three areas that are beginning to set SD-WAN solutions apart: AI, data sovereignty, and networks prepared for future threats from quantum computing. It also confirms the gradual integration of SD-WAN into models that combine connectivity and cybersecurity.

The publicly available information in the document does not provide a specific analysis of the Spanish market. However, the trends it identifies are particularly relevant in Europe, where technological sovereignty, infrastructure resilience, and preparedness for post-quantum threats are already part of the European Union’s (EU) digital agenda.

These trends also tie in with issues that Saima Systems—a telecommunications manufacturer specializing in SD-WAN with over 20 years of experience—has been addressing through its proprietary SAIWALL SD-WAN technology. Among these, digital sovereignty holds a particularly prominent place.

Ignacio Marco, sales director and co-founder of Saima Systems, highlighted a few months ago in an interview with Mayoristas Informática the growing importance among Spanish companies of maintaining governance and ultimate control over their own networks and reducing technological dependencies.

Gartner had already classified the SD-WAN market as mature in its guide published on August 13, 2025. A year later, it maintains that assessment and identifies new areas where solutions differ.

But what does it mean for SD-WAN to be a mature technology? It means that there is already a set of capabilities that companies consider essential—centralized management, dynamic route selection, the use of different connections, and network visibility—and the market is beginning to shift toward addressing new needs. The question for businesses now goes beyond why they should adopt SD-WAN and shifts to what an SD-WAN solution must offer to meet the new demands of the network.

Gartner points to greater automation through AI, the growing importance of sovereignty, and preparedness for a new cybersecurity landscape. Added to this is the gradual integration of SD-WAN into Secure Access Service Edge (SASE), a model that brings connectivity and security functions together within a single architecture.

Artificial intelligence impacts SD-WAN in two ways.

First: network management. Automated data analysis, anomaly detection, and resource optimization enable progress toward infrastructures with greater automation capabilities.

Second: AI itself is generating an increasing volume of communications. AI applications and agents make queries, exchange information, and automatically connect to various services. An agent can retrieve data, access a business application, or communicate with other systems to complete a task without each action depending directly on a person.

Gartner identifies the expansion of agent-based AI (Gartner Analysis on Agent-Based AI and SD-WAN) as one of the factors that will increase demands on enterprise networks and force SD-WAN to adapt to new communication patterns.

This underscores the importance of monitoring network activity, prioritizing applications, intelligently distributing traffic, and maintaining connectivity in the event of potential incidents.

Technological sovereignty has taken on increasing importance in Europe. Much of the business debate has so far focused on data localization or the selection of cloud service providers. However, network infrastructure is also part of that equation.

Who develops the technology, who controls network management, what dependencies exist on third parties, and under which jurisdiction the infrastructure operates are issues that are becoming increasingly important.

The European Commission specifically identifies control over key technologies, data, and infrastructure, as well as the reduction of external dependencies, as pillars of European technological sovereignty (Technological Sovereignty of the European Union).

Gartner’s inclusion of data sovereignty among the differentiating factors of SD-WAN confirms that control over infrastructure and its management is also beginning to play a role in decisions regarding enterprise connectivity.

Future quantum computers could compromise some of the cryptographic methods currently used to protect digital communications. For this reason, government agencies and technology companies have begun preparing for the transition to new cryptographic systems. Gartner already includes support for quantum-safe networks—designed to withstand future quantum threats—among the new areas of evolution for SD-WAN.

In Europe, this transition also has a specific timeline. On June 23, 2025, EU member states, with the support of the European Commission, published a coordinated roadmap for the transition to post-quantum cryptography. It stipulates that member states must begin the transition before the end of 2026 and identifies critical infrastructure as a priority, with a target deadline of 2030.

For businesses, this does not mean they need to replace their networks immediately. However, it does make the ability to adapt security systems to new standards a factor that will become increasingly important in long-term technology decisions.

The trends identified by Gartner align with a European context in which technological sovereignty, cybersecurity, AI, and resilient digital infrastructures are gaining importance. For a European company, modernizing its network therefore involves evaluating other factors alongside performance and cost:

• Visibility and manageability. An increasingly distributed and automated business environment requires knowing what is happening on the network and having the ability to take action on it.
• Coordinated connectivity and security. The shift toward SASE reinforces the need to address both dimensions in an integrated manner.
• Control over infrastructure. Software origin, platform management, and dependencies on third parties are all part of decisions regarding technological sovereignty.
• Ability to evolve. AI and post-quantum security demonstrate that requirements will continue to change. Architectural flexibility will be key to adapting to them.

In this scenario, some of the features of SAIWALL Secure SD-WAN take on particular importance. This proprietary technology, developed by Saima Systems, combines connectivity, cybersecurity, and centralized management for distributed enterprise networks. It allows users to manage different locations, utilize multiple links, prioritize applications, and apply security policies centrally.

Being an in-house development also provides control over the operation and governance of the infrastructure—a feature particularly relevant to the European debate on technological sovereignty. SAIWALL allows companies to manage their network without being tied to a single provider, reducing technological dependence at the provider level (vendor lock-in) and giving the company greater autonomy to decide how its infrastructure evolves.

The trends identified by Gartner are progressively broadening the criteria companies use to evaluate an SD-WAN infrastructure. Performance, security, and cost remain essential, but automation, technological control, sovereignty, and the ability to adapt to new threats are gaining importance.