Multi-Cloud Networks and the Role of SD-WAN (2026 Update)
- Coevolve
Key Takeaways
Multi-cloud environments are becoming a standard practice, but they introduce new challenges around visibility, management, security, and governance that traditional networks were not designed to address.
- Multi-cloud adoption is widespread across all industries
- Cloud environments can become fragmented and difficult to manage without a clear strategy
- SD-WAN helps unify access and control across environments
- Enterprise network architecture is shifting away from traditional perimeter models
- Security must now be embedded across the entire network, not just the edge
How SD-WAN can help tame Multi-Cloud Networks
Over the past few years, we’ve seen a steady increase in the use of multi-cloud networks. However, while multi-cloud adoption continues to accelerate across enterprises, these environments often introduce significant operational complexity for IT departments, particularly around connectivity, visibility, and network management. We have been exploring the utilization of SD-WAN solutions to solve these problems.
Our company, Coevolve, has been working to bridge the gap between old and new technologies since 2014. We help enterprises adopt the next generation of networking technology, with a particular focus on SD-WAN solutions. Our team has a background in traditional technologies and environments and new and emerging technologies.
As a business closely involved with technological trends, our initial interest in multi-cloud networks has evolved into an essential portion of our work. We have seen enterprises of all types moving their applications and infrastructure into cloud environments. As a result, multi-cloud environments have become both increasingly common and increasingly complex, often leading to challenges around application accessibility, network consistency, and control. SD-WAN could play a significant role in resolving those problems.
By enabling intelligent traffic routing, centralized policy management, and improved visibility across distributed environments, SD-WAN helps organizations regain control over fragmented multi-cloud architectures.
What does multi-cloud mean?
Most transitions to cloud environments are driven by digital transformation initiatives. However, in most enterprises, the entire network is rarely migrated to the cloud at once. Instead, organizations typically operate across an expanding mix of distributed cloud environments. Within a single enterprise, this may include:
- Internet-based cloud platforms
- SaaS (Software-as-a-Service) applications
- Private cloud environments
- Multiple public cloud providers
As a result, most enterprises now operate in complex multi-cloud environments without a single unified architecture. We have observed across industries and geographies that there is no consistent path to multi-cloud adoption. Instead, organizations typically expand their cloud footprint incrementally as business requirements evolve, resulting in a growing number of platforms, workloads, and connectivity needs.
This means that multi-cloud environments are often shaped by a combination of business, operational, and technology decisions rather than a single strategic plan. Different departments may adopt services independently, legacy systems may remain in place, and organizations may deliberately deploy workloads across multiple cloud providers to improve resilience, meet regulatory requirements or reduce risk. Over time, these factors can create fragmented environments where applications, data and networks are managed differently across platforms, increasing complexity and making visibility, connectivity and governance more difficult to maintain.
What is changing about enterprise networks?
A main driving force for SD-WAN is taming these multi-cloud networks and creating an easily accessible and controlled system for enterprises. In applying an SD-WAN, we focus on the underlay component, which will determine how the entire network functions.
You cannot assume that the network is built from the same tools and technologies as previous cycles. You must ensure that the underlay is able to support a multi-cloud environment.
The edge device
The edge device is vital, as it determines how you will access your destination. Here is where you make all decisions regarding access. For instance, you will want to consider whether or not the destination is a public or private cloud network, and which is more important. You can also determine which users have access to which resources, and how the control, prioritization, visibility, and analytics around those decisions work. As the first step of the system, the edge is critical for other pieces downstream to be accessed correctly.
The architecture
We have seen entirely new network architecture emerge lately. In the past, we would focus on the center of gravity for the network to determine the structure. However, even more technologically conservative enterprises have shifted to systems with no real perimeter or core. This change requires the use of new technologies that can come from cloud providers or traditional Telco vendors. The way that networks are architected and balanced has begun changing completely.
The security approach
With the change in architecture comes a shift in security. No perimeter means no perimeter of security, which knocks out a tried–and–true method. Instead, we look at instilling the security into the DNA of the network. Each component’s abilities and access are built into every other component. You need a strong level of control. Additionally, networks should be secured for expansion into different environments outside of the enterprise’s control.
Summary of multi-cloud networking challenges and SD-WAN benefits
Multi-cloud challenge | Impact on enterprise IT | How SD-WAN helps |
Disconnected cloud environments | Inconsistent application performance and connectivity | Centralized traffic management and intelligent routing across environments |
Lack of visibility across networks | Reduced operational control and performance monitoring | Enhanced analytics, monitoring and end-to-end visibility |
Inconsistent access policies | Increased security, compliance and governance risks | Consistent policy enforcement across environments |
Complex network architecture | Increased operational complexity | Simplified management through a software-defined overlay architecture |
Perimeter-less environments | Traditional security models no longer are effective | Integrated security with a centralized policy |
Any solution to the multi-cloud problem needs to take all of these factors into account. Networks have changed a lot in recent years, and we have to consider that when looking for ways to facilitate the use of multi-cloud systems.
Why the interest in SD-WAN as a solution?
SD-WAN is becoming a critical part of the multi-cloud networking landscape. It acts as an intelligent traffic controller for guiding you from point A to its intended destination across complex network environments. With dynamic and flexible policy management, SD-WAN allows you to identify traffic, determine its destination, and apply the right policy with the correct priority level very easily.
Because it can simplify and untangle the web of multi-cloud systems, SD-WAN is an essential element of modern enterprise networks. The benefits enterprises are already getting from SD-WAN adoption could also lead to a future model where multiple network overlays operate simultaneously to optimize performance, security, and control across different environments.
What are some of the trends we are seeing?
We know that multi-cloud networks aren’t going away anytime soon. There may be some consolidations, but the growing use of multi-cloud systems won’t be significantly slowing down. We can expect cycling, as enterprises allow multi-cloud networks to get too out of hand and then rein them back in. Additionally, we already see a trend towards the use of public internet as a shift away from the traditional direct connection links.
Multi-cloud networks are becoming more prevalent today, but the innate complexity of the systems can cause some issues to arise. However, with SD-WAN, we can streamline the use of multi-cloud environments. With the right underlay infrastructure and SD-WAN, you can reap the benefits of multi-cloud systems without battling the usual problems that come from them.
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FAQs: multi-cloud networks and SD-WAN
What is a multi-cloud network?
A multi-cloud network is an environment that connects applications, users and data across multiple cloud platforms, including SaaS applications, public cloud providers and private cloud networks
Why are multi-cloud networks becoming more common?
Multi-cloud adoption is often driven by digital transformation, business requirements, regulatory considerations, and resilience objectives. Over time, this can result in an organization operating across multiple platforms and environments.
What challenges do multi-cloud environments create?
They can increase operational complexity, creating challenges around visibility, connectivity, security, policy consistency, and network management.
How does SD-WAN help with multi-cloud networks?
SD-WAN helps simplify connectivity across cloud environments by providing intelligent traffic routing, centralized visibility, consistent policy enforcement, and application-aware performance optimization.
How is enterprise network architecture changing?
Enterprise networks are evolving from centralized perimeter-based models toward distributed models that support cloud services, remote users, and applications wherever they reside with embedded security throughout the network.