Lumen Technologies vs Zayo — Network Infrastructure Comparison
Independent side-by-side comparison by Fibi · Updated 2026
Lumen and Zayo are both Tier 1 fiber network providers serving enterprise and carrier customers. Lumen offers a broader managed services portfolio (MPLS, SD-WAN, security, edge). Zayo focuses on carrier-grade fiber infrastructure — dark fiber, wavelengths, and DIA — for carriers and data center operators.
Side-by-Side Comparison
Best For
Lumen Technologies
Large enterprise and carrier needing global backbone, MPLS, edge computing, or NaaS
Zayo
Carriers, data centers, and large enterprise needing carrier-grade fiber infrastructure
Technology
Lumen Technologies
Fiber backbone, MPLS, Dark Fiber, Wavelengths, IP Transit, Edge Compute
Zayo
Dark Fiber, Wavelengths (100G/400G), Dedicated Internet, Ethernet, Colocation
Max Speed
Lumen Technologies
Up to 400G+ wavelengths; 100 Gbps+ IP transit capacity
Zayo
Up to 400G per wavelength; 100 Gbps+ DIA
Contract Terms
Lumen Technologies
24–60 months; long-term dark fiber IRUs available
Zayo
24–60 months; Indefeasible Right of Use (IRU) for dark fiber
SLA / Uptime
Lumen Technologies
99.999% for dedicated circuits and MPLS
Zayo
99.999% for dedicated circuits; segment-level SLA
Coverage Area
Lumen Technologies
60+ countries; 400,000+ route miles of global fiber
Zayo
140,000+ route miles; US (coast-to-coast) and Western Europe
SD-WAN Available
Lumen Technologies
Yes — Lumen SD-WAN and SASE (managed and self-managed options)
Zayo
Yes — SD-WAN overlay and managed transport services available
UCaaS Available
Lumen Technologies
Limited — focuses on network infrastructure; partners for UCaaS
Zayo
No — network infrastructure and connectivity only
Bundled Services
Lumen Technologies
Dark Fiber + MPLS + Wavelengths + SD-WAN + Edge + DDoS + SASE
Zayo
Dark Fiber + Wavelengths + DIA + SD-WAN + Colocation
Pricing
Lumen Technologies
Contact for pricing
Zayo
Contact for pricing
Key Strengths & Weaknesses
Strengths
- Global Tier 1 backbone with advanced security (Black Lotus Labs)
- Edge computing and Network as a Service (NaaS) platform
- MPLS and IP transit at carrier and hyperscaler scale
- Connected Security: DDoS scrubbing, SASE, Zero Trust
- CDN and media delivery for content-heavy enterprises
Limitations
- Legacy brand reputation (formerly CenturyLink)
- Not designed for SMB or single-location buyers
- Complex enterprise sales and procurement cycles
Strengths
- Largest independent fiber network in the US and Europe
- 400G wavelength services with flexibility to scale
- Carrier-neutral coast-to-coast interconnection hubs
- Strong data center campus and colocation connectivity
- Deep fiber presence in top internet exchange points (IXPs)
Limitations
- Not designed for SMB or consumer buyers
- Not a full managed services provider by nature
- Complex procurement process for non-carrier enterprise buyers
Which Is Right for You?
Use this guide to identify the better fit for your specific situation.
Choose Lumen Technologies if:
- ›You need managed MPLS, SD-WAN, or connected security alongside fiber
- ›Global reach in 60+ countries is required
- ›Edge computing or NaaS (Network as a Service) is part of your roadmap
- ›You want a single vendor for transport + managed services + security
- ›CDN or media delivery at scale is a requirement
Choose Zayo if:
- ›You're a carrier, data center, or hyperscaler buying fiber infrastructure
- ›400G wavelengths are needed for backbone capacity
- ›Carrier-neutral coast-to-coast interconnection is the primary requirement
- ›Dark fiber with long-term IRU is preferred over managed services
- ›Data center campus connectivity and IXP peering are core needs
Not a Good Fit If…
Lumen Technologies may not be ideal if:
- Buyers who only need dark fiber or wavelength without managed services
- Organizations seeking the lowest-cost raw transport without bundled services
Zayo may not be ideal if:
- Enterprise buyers who also need managed SD-WAN, security, or UCaaS
- Organizations requiring global MPLS in markets beyond US and Western Europe
Not sure which is right for you?
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