For many Australian businesses, the way networks are designed and managed has changed dramatically over the past decade. Cloud applications, remote work, Microsoft Teams, video conferencing, cybersecurity requirements, and multi-site connectivity have all reshaped what organisations expect from their internet and WAN infrastructure.
As a result, businesses and IT providers are increasingly comparing two major networking technologies: MPLS and SD-WAN.
While MPLS has long been considered the traditional enterprise networking solution, SD-WAN is rapidly becoming the preferred option for organisations looking for greater flexibility, lower costs, and better cloud performance. For MSPs, telecommunications resellers, and enterprise IT teams, understanding the difference between these technologies is essential when designing modern business connectivity solutions.
What Is MPLS?
MPLS, or Multiprotocol Label Switching, has been used by enterprise organisations for many years to connect offices and sites through a private carrier-managed network. Rather than sending traffic over the public internet, MPLS creates a dedicated pathway between locations, which allows businesses to prioritise traffic and maintain reliable application performance.
Historically, MPLS became popular because it delivered predictable network performance for critical business applications such as voice, ERP systems, video conferencing, and private data centre connectivity.
For large organisations with many offices, MPLS offered a level of consistency and reliability that standard internet connections simply could not provide at the time.
Even today, many enterprises across sectors like finance, healthcare, and government still rely heavily on MPLS networks because of their stability and security.
What Is SD-WAN?
SD-WAN, or Software-Defined Wide Area Networking, is a newer approach that uses software intelligence to manage and optimise network traffic across multiple internet connections.
Rather than relying solely on expensive private circuits, SD-WAN can intelligently route traffic across:
- Business fibre
- Enterprise Ethernet
- NBN connections
- 4G and 5G backup services
- Existing MPLS links
The technology continuously monitors network conditions and automatically prioritises important applications such as Microsoft Teams, Zoom, cloud platforms, or VoIP traffic.
This gives businesses far more flexibility and visibility compared to traditional networking models.
As more organisations move applications into the cloud, SD-WAN has become increasingly attractive because it is designed specifically for cloud-first environments.
Why Businesses Are Moving Towards SD-WAN
One of the biggest drivers behind SD-WAN adoption is the shift away from centralised data centres.
In traditional MPLS environments, traffic was often backhauled through a head office or primary data centre before accessing cloud applications. This worked reasonably well when most systems were hosted internally, but it can create inefficiencies in today’s cloud-centric world.
Modern businesses rely heavily on platforms such as Microsoft 365, Salesforce, AWS, and Google Cloud. SD-WAN allows internet traffic to break out locally at each site, reducing latency and improving application performance.
Businesses also appreciate the flexibility SD-WAN provides. New offices can be brought online faster, bandwidth can be scaled more easily, and organisations are no longer tied to a single carrier network.
For rapidly growing businesses, this flexibility can make a significant operational difference.
The Cost Difference Between MPLS and SD-WAN
Cost is another major reason organisations are transitioning towards SD-WAN solutions.
MPLS circuits are typically expensive because they rely on private carrier-managed infrastructure. The more locations a business has, the more these costs can increase.
SD-WAN, on the other hand, allows businesses to leverage more cost-effective internet services while still maintaining intelligent traffic management and redundancy.
For example, a business may use:
- Fibre as the primary connection
- NBN as a secondary service
- 5G as failover
The SD-WAN platform then dynamically manages traffic across all available connections.
This approach can significantly reduce WAN costs while improving resilience and performance.
Visibility and Network Intelligence
Traditional MPLS environments often provide limited visibility into application performance and user experience. Troubleshooting can sometimes involve multiple providers and limited reporting capabilities.
One of SD-WAN’s strongest advantages is visibility.
Modern SD-WAN platforms provide detailed analytics that allow IT teams to monitor:
- Application performance
- Network congestion
- Packet loss
- Latency
- User experience
- Bandwidth utilisation
This level of insight helps businesses proactively manage their networks rather than simply reacting to outages.
For MSPs and managed network providers, this visibility also creates opportunities for additional managed services and ongoing customer engagement.
Is MPLS Still Relevant?
Despite the rise of SD-WAN, MPLS is far from obsolete.
There are still many situations where MPLS remains highly valuable, particularly for organisations with strict performance, compliance, or security requirements.
Industries such as banking, healthcare, mining, and government may continue using MPLS for:
- Critical applications
- Highly sensitive data
- Private network segmentation
- Guaranteed performance requirements
In many cases, organisations now deploy hybrid WAN environments that combine MPLS and SD-WAN together.
This allows businesses to maintain MPLS for mission-critical traffic while using SD-WAN for cloud applications and internet-based workloads.
SD-WAN and Cybersecurity
Cybersecurity is also becoming a major factor in WAN decision-making.
Modern SD-WAN platforms increasingly integrate advanced security capabilities such as:
- Secure web gateways
- Firewall services
- Zero Trust access
- Threat monitoring
- Secure remote connectivity
As businesses embrace hybrid work and distributed teams, secure network access becomes even more important.
This convergence between networking and security is one reason SD-WAN adoption continues accelerating across Australia.
Final Thoughts
The decision between MPLS and SD-WAN ultimately comes down to business priorities, network architecture, and long-term technology strategy.
For many modern organisations, SD-WAN offers greater flexibility, stronger cloud performance, improved visibility, and lower operational costs. It is particularly well suited to cloud-first businesses, multi-site organisations, and companies seeking more agile networking solutions.
However, MPLS still plays an important role in environments where guaranteed performance, private connectivity, and highly controlled networking are essential.
For MSPs and telecommunications resellers, wholesale SD-WAN solutions represent one of the fastest-growing opportunities in managed connectivity, allowing providers to deliver smarter, more flexible networking solutions to Australian businesses.
