Network Architecture & SD-WAN
Your WAN is the highway your business runs on. Legacy designs built for on-premise data centers can’t keep pace with cloud workloads, distributed teams, and modern application demands — and most organizations are overpaying for infrastructure that’s holding them back.
What Legacy WAN Architecture Looks Like
Dedicated MPLS circuits at $500–$2,000 per site per month. All internet traffic backhauled to a central data center before reaching cloud applications like Microsoft 365 — adding latency and consuming expensive bandwidth. Single-ISP dependency with no failover. Manual configuration of each site requiring on-site visits. Static routing that cannot adapt to link failures or shifting application demands.
This was the right architecture for an era when applications lived in data centers and employees worked in offices. That world is gone. Most organizations are still paying for infrastructure that was designed for it.
- Single ISP — no failover
- Manual site configuration
- Static, hardware-defined routing
- MPLS only — expensive, slow to provision
- Cloud traffic backhauled through HQ
- Weeks to bring a new site online
- No centralized visibility across sites
- Multi-carrier with automatic failover
- Zero-touch provisioning
- Intelligent, application-aware routing
- Broadband + LTE + fiber hybrid
- Direct cloud on-ramp for SaaS traffic
- New sites live in hours
- Single dashboard — all sites, all traffic
Common Gaps in This Domain
During a Domain 1 assessment, these are the findings that surface most consistently — regardless of organization size or industry.
Single-ISP Dependency
One circuit failure halts operations across all affected sites with no automatic recovery path. Most organizations discover this risk only when it materializes.
Overpaying for MPLS
Legacy MPLS circuits at $500–$2,000/site/month can typically be replaced with broadband + SD-WAN at a fraction of the cost with better performance and flexibility.
Cloud Traffic Backhauled Through HQ
Microsoft 365, Salesforce, and other SaaS applications are accessed through a central data center instead of direct internet breakout — adding unnecessary latency at every site.
No Application-Aware Routing or QoS
Voice and video traffic competes with general internet traffic for bandwidth. Critical applications get throttled during peak usage with no automated prioritization in place.
No Centralized Visibility
No single console showing WAN performance across all sites. Issues are discovered reactively — by users calling the help desk — rather than detected proactively.
The Modern SD-WAN Architecture
SD-WAN aggregates broadband, fiber, LTE, and 5G connections at each site and applies intelligent, policy-based routing across all of them simultaneously. Cloud traffic goes directly to the cloud. Voice traffic gets priority. If a circuit fails, traffic shifts to backup in under a second — automatically, without manual intervention.
- Application-aware routing — Microsoft 365, Salesforce, and VoIP always use the best available path based on real-time link quality and policy rules
- Automatic failover — sub-second switchover across broadband, LTE, and fiber with no manual intervention and no site downtime
- WAN optimization — reduces bandwidth consumption 20–40%, extending the life of existing circuits and reducing monthly costs
- Zero-touch provisioning — new sites deployed in hours from a central dashboard, not days or weeks waiting on MPLS lead times
- Direct cloud on-ramp — SaaS and cloud traffic breaks out locally at each site instead of backhauling through headquarters
- Centralized management — single console for all sites, all circuits, all traffic — with real-time performance dashboards and alerting
Vendor-Agnostic Sourcing Across the SD-WAN Market
Through our partnership with Intelisys, NetSphere has access to the full spectrum of SD-WAN and managed WAN providers — from enterprise-grade platforms to carrier-managed solutions. We don’t lead with a vendor. We lead with your environment, your requirements, and your budget — then identify which platform fits best.
Enterprise SD-WAN Platforms
Full-featured SD-WAN with application-aware routing, multi-link failover, and deep analytics. Sized for multi-site organizations with complex traffic requirements.
Carrier-Managed SD-WAN
Carrier-delivered SD-WAN with bundled connectivity and managed service overlay. Lower operational burden — carrier handles hardware, monitoring, and NOC support.
SASE-Integrated WAN
SD-WAN with embedded security inspection at every edge node. Ideal for organizations modernizing network and security simultaneously — one platform, one policy engine.
Hybrid WAN + LTE/5G Backup
Broadband primary circuits with LTE or 5G failover at every site. Cost-effective resilience for locations where fiber diversity isn’t available or cost-justified.