For years, the answer to "SD-WAN or MPLS?" was "both — use SD-WAN for internet and MPLS for the parts that really matter." In 2026, that answer is mostly wrong. SD-WAN has matured to the point where it can replace MPLS for 80% of use cases at 40-60% of the cost. But 20% of use cases still favor MPLS, and the rest of this comparison is about which is which.
| Dimension | SD-WAN | MPLS |
|---|---|---|
| Per-site cost (typical) | $150-400/month | $800-2,500/month |
| Provisioning time | 1-4 weeks | 30-120 days |
| Transport flexibility | Any internet, any carrier | Carrier-provisioned only |
| Performance control | Application-aware routing, dynamic path selection | Guaranteed class-of-service by carrier |
| True QoS (end-to-end) | Best-effort across public internet | Yes, carrier-guaranteed |
| Security | Integrated firewall, often SASE-ready | Network-layer, add-on security typically needed |
| Failover | Dual-transport with sub-second failover | Secondary circuit usually required |
| Cloud performance | Excellent (direct-to-cloud breakouts) | Poor without cloud on-ramp |
| Multi-carrier redundancy | Native | Carrier-dependent |
| Best for | Multi-site SMB/mid-market, cloud-first, cost-conscious | Latency-sensitive real-time workloads, regulated verticals requiring CoS |
The bottom line
For almost all multi-site businesses in 2026, SD-WAN is the right answer. The cost savings are real, the reliability is enterprise-grade when paired with diverse transports, and the cloud-friendliness matches how applications actually work now. The exceptions that still favor MPLS: very latency-sensitive real-time workloads (trading floors, certain SCADA/OT networks), highly regulated verticals where carrier-certified CoS is a compliance requirement, and remote locations where quality internet isn't available. For the other 80%+ of cases, SD-WAN wins on price, agility, and performance.
Pricing shown reflects common market ranges across major US metros. MPLS pricing has dropped significantly from historical highs. SD-WAN pricing depends heavily on underlying transport and vendor. Contact us for a site-specific quote.
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