SD-WAN Service for Multi-Site UK Businesses

If you are weighing this against a dedicated circuit, start with our business leased line pillar, then compare the two side by side in MPLS vs SD-WAN.

What is SD-WAN and how does it work?

SD-WAN replaces rigid, hardware-defined routing with software policies that sit across all of your WAN links. Edge appliances at each site continuously measure latency, jitter and packet loss, then steer traffic — voice, Microsoft 365, line-of-business apps — onto whichever path performs best, failing over in milliseconds when a link degrades.

In practice that means:

• Active-active links — broadband and leased line carry traffic together, not one sitting idle as a spare.
• Application-aware routing — Teams calls take the low-latency path; backups take the cheap one.
• Sub-second failover — a dropped circuit reroutes before users notice.
• Central policy control — one dashboard governs every branch, not box-by-box configuration.

What's included in AMVIA's managed SD-WAN?

AMVIA's managed SD-WAN is a fully run service, not a box you self-configure. Our Sheffield-based engineers handle design, edge hardware, traffic policies, security overlay and ongoing optimisation, with monitoring around the clock and critical issues responded to within one hour.

• Edge appliances shipped, installed and configured at every site.
• Traffic-steering policies tuned to your priority applications.
• Encrypted overlay with segmentation between sites and the internet — pair it with leased-line security for end-to-end protection.
• 24/7 monitoring and proactive fault resolution by UK-based engineers.
• Monthly reporting on performance, availability and capacity.

Why do UK SMEs need SD-WAN?

Most multi-site SMEs over-pay for under-used circuits while critical apps still stutter. SD-WAN fixes both: it makes ordinary broadband enterprise-grade by bonding and prioritising it, so you add resilience without buying a dedicated line for every branch.

The headroom is real. The UK average broadband download speed was 69.4 Mbps in 2024 (Ofcom Connected Nations 2024) — fast enough that, steered intelligently, commodity links can carry production traffic that once demanded MPLS. As your applications move to the cloud, direct breakout to Microsoft 365 at each site removes the hairpin back to head office. Microsoft 365 now serves over 400 million paid commercial seats globally, so cloud-path performance is no longer a side issue.

Securing that wider attack surface matters too. The NCSC recommends segmentation and encrypted transport across distributed networks — both native to a well-designed SD-WAN fabric.

SD-WAN vs MPLS — which is right for multi-site?

MPLS guarantees performance but is expensive and slow to provision; SD-WAN layers intelligent routing over any connection at lower cost, and many businesses run a hybrid of both. The table below sets out the trade-offs.

For a deeper resilience design, combine SD-WAN with backup connectivity and multi-site connectivity.

How does AMVIA deploy your SD-WAN?

Deployment runs in four stages and typically takes 2–4 weeks where suitable broadband already exists; allow 45–90 working days when new leased lines are required. We map first, design second, and only ship hardware once the policy model is agreed.

1. Network discovery — map the existing WAN, measure bandwidth at each site, capture application priorities. 2. SD-WAN design — build the overlay: traffic-steering rules, failover logic, security and segmentation policy. 3. Edge deployment — ship, install and configure appliances at every location. 4. Optimisation and management — continuous tuning, 24/7 monitoring and proactive fault resolution.

If you are still settling the underlying circuit, read what is a leased line or compare dedicated internet access options first.

How much does SD-WAN cost?

There is no single sticker price — cost depends on site count, link mix and bandwidth — but the saving lever is consistent: replacing or supplementing premium circuits with intelligently steered commodity links. AMVIA SD-WAN deployments typically reduce WAN costs by 30–50% — a typical UK 2026 range for multi-site networks — while improving resilience.

• Per-site model — pricing scales with the number of edge appliances and managed sites.
• Hybrid savings — keep a leased line where you need a 99.99% uptime SLA; use SD-WAN-steered broadband everywhere a guaranteed circuit is overkill.
• One bill, one provider — connectivity, overlay and security under a single accountable contract.

Why choose AMVIA for SD-WAN?

AMVIA is a UK managed security and connectivity partner, not a telecoms reseller. We run SD-WAN as a security-first service for 1,200+ UK businesses across legal, finance, healthcare and professional services, with in-house engineers and accountability that sits with one provider.

• Sheffield-based, UK-focused delivery and support team.
• Cyber Essentials Plus certified; Microsoft Solutions Partner status (Modern Work, Security, Infrastructure).
• 1,200+ UK businesses managed across regulated sectors.
• Critical issues answered within one hour, monitored 24/7.