A rigorous cost comparison of SD-WAN and MPLS for multi-site enterprises across Africa — beyond the hype to the real numbers.
For many African enterprises, the WAN is becoming a business-critical platform. Branches need access to cloud applications, ERP systems, cybersecurity services, voice, video, payment platforms, and datacenter-hosted workloads. The question is no longer whether connectivity is important. The question is which architecture gives the best balance of cost, performance, resilience, and control.
For years, MPLS was the default answer. It offered predictable performance, managed quality of service, private routing, and carrier accountability. For banks, public institutions, large retailers, and industrial groups, MPLS remains valuable. It is stable, familiar, and well understood.
But enterprise traffic has changed. Applications have moved to cloud. Users access SaaS platforms directly. Security has moved closer to the edge. Branches need more bandwidth, faster deployment, and backup links. This is where SD-WAN becomes attractive.
Gartner described the SD-WAN market as mature, while noting that vendor differentiation remains important for infrastructure and operations leaders. IDC's 2025 managed SD-WAN research, quoted by Deutsche Telekom, identifies key adoption drivers including network transformation, upgrades of legacy MPLS networks, higher bandwidth demand, improved application availability, and cloud adoption.
The real TCO discussion in Africa must go beyond the simple claim that “SD-WAN is cheaper than MPLS.” That is sometimes true, but not always. The real cost depends on underlay quality, site geography, local ISP maturity, backup requirements, security design, licensing, operations, and support.
MPLS costs are usually easier to understand: fixed monthly recurring charges, predictable SLA, managed router options, and defined service boundaries. The limitation is that bandwidth upgrades can be expensive, provisioning can be slow, and cloud traffic may follow inefficient paths if everything is backhauled to the datacenter.
SD-WAN changes the model. It can combine fiber, broadband, 4G/5G, microwave, satellite, and MPLS. It can steer applications dynamically, prioritize critical traffic, and improve resilience through multiple links. It also gives enterprises better visibility into application performance. But SD-WAN introduces new cost elements: licenses, appliances or virtual edges, orchestration, security integration, local internet contracts, monitoring, and skilled operations.
In Africa, underlay diversity is both an opportunity and a challenge. In major cities, enterprises may have several good connectivity options. In remote industrial sites, ports, mines, logistics hubs, or rural branches, the available links may be limited or unstable. SD-WAN can improve resilience by bonding multiple links, but it cannot magically create quality where no usable underlay exists.
A realistic TCO comparison should include seven cost categories:
- Connectivity cost: MPLS, DIA, broadband, LTE/5G, microwave, or satellite.
- Hardware and licensing: routers, SD-WAN edges, subscriptions, support.
- Security stack: firewall, SASE, segmentation, secure web gateway, zero trust.
- Operations: monitoring, troubleshooting, change management, configuration backup.
- Deployment cost: installation, staging, cabling, local access, project management.
- Downtime cost: lost productivity, branch outage, transaction failure, SLA penalties.
- Scalability cost: adding sites, increasing bandwidth, integrating cloud services.
The best answer is often hybrid. Keep MPLS for critical sites or sensitive traffic where the SLA justifies the price. Use SD-WAN to add internet breakout, cloud optimization, backup links, and better visibility. Over time, reduce MPLS dependency where the underlay quality and security architecture allow it.
For a bank, MPLS may remain useful for core transaction flows while SD-WAN improves branch resilience and cloud access. For retail, SD-WAN can reduce cost and accelerate deployment across distributed stores. For logistics and industry, SD-WAN can combine fixed and wireless access to keep sites connected. For public institutions, the decision should include sovereignty, security, and operational capacity — not only bandwidth price.
ODDnet's recommendation is simple: do not choose SD-WAN or MPLS based on hype. Build a site-by-site TCO model, classify applications, test underlay performance, define security requirements, and then select the architecture. In Africa, the winning WAN is usually not the cheapest link. It is the design that keeps the business running.