Updated October 2026 · For IT leaders at multi-location businesses
For years, MPLS was the standard way to connect business locations privately. Today most applications live in the cloud, and SD-WAN offers a more flexible, often less expensive alternative. Choosing between them depends on your applications, locations and budget.
Here is a practical comparison.
- MPLS provides private, predictable circuits but is costly and slow to change.
- SD-WAN uses any internet connection with intelligent routing and failover.
- SD-WAN offers direct, faster access to cloud applications.
- Many businesses migrate gradually or run both during a transition.
How MPLS Works
MPLS is a private network from a carrier that links your sites with predictable performance. Traffic to the internet or cloud usually travels back to a central site first, which adds delay as more applications move to the cloud.
How SD-WAN Works
SD-WAN builds secure, encrypted tunnels between sites over ordinary internet connections, such as fiber, fixed wireless and 5G, and steers each application over the best path. It includes automatic failover and central management. Learn more in our SD-WAN guide.
Comparison
| SD-WAN | MPLS | |
|---|---|---|
| Cost | Usually lower | Usually higher |
| Deployment | Days to weeks | Weeks to months |
| Cloud access | Direct | Through a central site |
| Failover | Built in | Extra circuits |
| Flexibility | Add connections anytime | Carrier changes required |
| Predictability | Very good with good links | Excellent |
When MPLS Still Makes Sense
- Applications that need strict, guaranteed latency between sites.
- Regulatory requirements tied to private circuits.
- Long-term contracts that are not yet up for renewal.
Migrating From MPLS to SD-WAN
- Inventory sites, applications and current contracts.
- Pilot SD-WAN at one or two locations.
- Run SD-WAN alongside MPLS during the transition.
- Move sites over as contracts end.
- Retire MPLS circuits once performance is proven.
Performance and Quality of Service
MPLS offers carrier-managed quality of service across its private network. SD-WAN achieves similar results by measuring each connection continuously and steering voice and video over the best path, switching instantly if a link degrades. With two good connections per site, most businesses see equal or better application performance than with MPLS.
Security Considerations
- SD-WAN encrypts all traffic between sites.
- Integrated firewall and segmentation separate payment, staff and guest traffic.
- Central policies apply the same protection at every location.
- Direct cloud access avoids sending all traffic through headquarters.
Total Cost Over Time
Compare not just monthly circuit prices but the cost of backup circuits, installation delays, bandwidth upgrades and staff time. SD-WAN usually lowers all of these, which is why many organizations replace MPLS as contracts come up for renewal.
SD-WAN From Cronus
Cronus provides managed 5G SD-WAN with local design and 24/7 monitoring, and can supply the underlying connections, including fixed wireless internet in Detroit and fiber, so one provider owns the whole solution.
Frequently Asked Questions
Is SD-WAN cheaper than MPLS?
Usually, yes, because it uses standard internet connections rather than private carrier circuits.
Is SD-WAN secure?
Yes. SD-WAN encrypts traffic between sites and can include firewall and segmentation features.
Can SD-WAN and MPLS run together?
Yes. Many businesses run both during a migration, moving sites as contracts expire.
