Verizon Business Enterprise Networking — one fabric for every site you run.

Three wide-area patterns dominate enterprise networks today, and most real designs combine at least two. Understanding the distinct strengths of each is the starting point for any credible network design.

MPLS is a private WAN service that predates SD-WAN by a couple of decades. Traffic rides on a carrier-operated label-switched backbone with guaranteed latency, jitter, and packet loss envelopes. The trade-off is cost, slower turn-up at new sites, and limited application awareness — the network moves packets well but does not natively understand what the packets belong to.

SD-WAN is an overlay network. Edge appliances at each site build encrypted tunnels across any available transport — fiber, cable, 5G, LTE, satellite, even MPLS — and a central controller directs traffic based on application policy and real-time path quality. SD-WAN is cheaper, faster to deploy, and application-aware, but depends on the underlay transports for its quality envelope.

Broadband VPN is the legacy low-cost option: a software client or small appliance building IPsec tunnels over commodity internet. It is fine for a handful of remote workers or low-value branches, but lacks the centralized policy, orchestration, and service-level enforcement that define SD-WAN.

The modern answer for most enterprises is SD-WAN as the default overlay, with MPLS retained at a subset of sites where guaranteed WAN performance is legally or operationally required, and broadband VPN reserved for truly light-touch use cases. Verizon Business designs and runs all three, and the most common production outcome is a hybrid.

When a transport degrades, the question is not whether failover happens — it is how fast and how invisibly. Verizon Business SD-WAN aims for failover times measured in hundreds of milliseconds, below the human-perceptible threshold for voice and video. Calls stay connected. SaaS sessions do not re-authenticate. Payment terminals do not time out mid-transaction.

Hitting that number requires three things working together. First, the edge appliance must detect the degradation quickly — high-frequency probing, not slow heartbeats. Second, alternative transports must already be warm, with BGP sessions and IPsec tunnels preestablished so there is no cold-start delay. Third, the application policy must be explicit about the acceptable fallback ordering for each traffic class. Verizon Business ships these settings tuned for real production workloads, not the vendor defaults.