ROI of a Network Migration: Justifying the Investment to the Executive Committee

April 15, 2026·2 min read·278 words

Justify network migration ROI to the Executive Committee: calculate savings (MPLS → SD-WAN, hardware refresh), productivity gains, reduced downtime, and avoided compliance costs (NIS2 fines). This guide helps CIOs build a strong business case.

ROI methodology

Calculate the initial investment (CAPEX + services)
Calculate annual gains (savings + revenue)
ROI = (Gains - Costs) / Costs × 100
Payback period: time required to recover the investment
NPV (Net Present Value): discount rate

Sources of gains

Direct savings

MPLS → SD-WAN: 40-80% WAN savings
Hardware refresh: consolidation = -30% power/cooling
Consolidated licenses: Security Fabric vs multi-vendor solutions
Personnel: automation = fewer manual tasks

Productivity gains

Higher throughput = less user waiting time
WiFi 6 vs WiFi 5: +40% mobile productivity
ZTNA for remote work: improved employee satisfaction
Calculate: hours × number of users × days

Avoided risks

NIS2 fines: up to €10M or 2% of revenue
Average ransomware cost: €1-5M
Network downtime: €5-100k/hour
GDPR breach: 4% of revenue

SD-WAN business case example

Investment: €200k (hardware + deployment)
MPLS savings: €300k/year (750 → €450k)
Productivity gain: €50k/year
Annual gain: €350k
Payback: 7 months
3-year ROI: (1 050 - 200) / 200 = 425%

Network refresh example

Investment: €150k
Electricity savings: €8k/year
Reduced downtime (0.99 → 0.999): €20k/year in avoided costs
Payback: 5.4 years without compliance benefits
Including avoided NIS2 costs (1 potential €500k fine): substantial ROI

Business case best practices

Use conservative figures (not optimistic ones)
Benchmark against comparable data (Gartner, IDC)
Storytelling: current problem + solution + gains
Phased approach: quick wins + long-term initiatives
Business stakeholder validation (not just IT)

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