Zayo is a network infrastructure and connectivity services provider offering a range of fiber, transport, and managed network solutions. **Fiber & Transport:** Zayo operates a large fiber network providing dark fiber, private networks, wavelength services, and wireless infrastructure for carriers, enterprises, and other organizations. **Network Connectivity:** Services include Dedicated Internet Access (DIA), IP Transit, Ethernet, WANs, CloudLink (cloud connectivity), and DynamicLink (a Network-as-a-Service offering enabling dynamic bandwidth management). **Managed Connectivity:** Managed services include Local Area Network (LAN) management, Managed SD-WAN, and Managed Starlink for satellite connectivity. **Managed Cybersecurity:** Zayo offers Managed Firewall and Secure Access Service Edge (SASE) as cybersecurity-focused managed services layered on top of its network infrastructure. **Managed Communications:** Voice and collaboration services include Zayo SIP Solutions, Zayo UC+ (Unified Communications), and Zayo Voice. Zayo serves multiple verticals including finance, healthcare, education, government, media, manufacturing, retail, transportation, data centers, and technology companies. The company operates an international fiber network and positions its offerings as infrastructure-level connectivity with optional managed security and communications overlays.