Multi-Cloud Connectivity: Network Strategy for CIOs

April 15, 2026·2 min read·254 words

Multi-cloud connectivity strategy: 90% of enterprises will use multi-cloud in 2026. AWS Direct Connect, Azure ExpressRoute, GCP Interconnect, and Megaport fabric. Architecture, costs, and governance. A guide for CIOs.

Why Adopt Multi-Cloud

Avoid vendor lock-in with a single hyperscaler
Best-of-breed services (AWS AI, Azure M365, GCP analytics)
Compliance requirements (data sovereignty and regions)
Greater pricing leverage
Resilience

Connectivity Options

Public Internet

Simple, but without a strong SLA
Variable latency
Non-critical use cases

Direct Connect (AWS)

Dedicated 1G-100G connection
POP availability (Equinix Paris)
Guaranteed latency
Price: €1-5k/month per port

ExpressRoute (Azure)

Equivalent to AWS Direct Connect
Partners: Orange, Equinix, and Megaport
Options: dedicated or provider-based

GCP Interconnect

Dedicated (10G) or Partner (pay-per-use)
Strong coverage in Europe

Megaport / Equinix Fabric

Unified cloud fabric: connects AWS + Azure + GCP + Oracle through 1 port
Provisioning in minutes
700+ Megaport POPs
Price: €500/month/1G port + cross-connects

Hub-and-Spoke Architecture

On-premises DC = hub
Multi-cloud environments = spokes
Interconnection through Megaport/Equinix
SD-WAN overlay for unified connectivity

Multi-Cloud Security

Cloud Security Posture Management (CSPM): Wiz, Orca, and Prisma Cloud
Cross-cloud ZTNA
Identity federation (Azure AD → AWS IAM)
Encryption in transit + at rest
Vulnerability scanning

FinOps Governance

Consistent tagging across clouds
Cost allocation by BU/project
Reserved instance vs. on-demand optimization
Tools: Cloudability, CloudHealth, and Apptio
Typical savings: 15-30%

Multi-Cloud Budget for 1000 Users

Direct Connect + ExpressRoute + GCP Interconnect: €30-50k/year
Megaport fabric: €20-30k/year (alternative)
CSPM tools: €40-80k/year
FinOps platform: €20-50k/year

Order from OPTINOC

Multi-cloud architecture consulting + Megaport/Equinix deployment + CSPM + FinOps. Quote within 1 week.

Frequently Asked Questions

Faut-il une connexion dédiée vers chaque cloud ?

Pour les workloads critiques (ERP, bases de données), oui : une connexion dédiée (Direct Connect, ExpressRoute) offre une latence stable et une bande passante garantie. Pour les workloads non critiques (dev, backup), un VPN IPsec via Internet suffit et coûte beaucoup moins.

Quel est le coût d'une connexion Direct Connect ?

AWS Direct Connect 1 Gbps : 200-400 EUR/mois pour le port + frais de transit data (0.02-0.05 EUR/Go). Azure ExpressRoute 1 Gbps : 300-500 EUR/mois. Plus les frais de cross-connect chez le fournisseur de colocation (100-300 EUR/mois).

SD-WAN remplace-t-il les connexions cloud dédiées ?

Le SD-WAN optimise la connectivité cloud via Internet avec du QoS et du failover intelligent. Il ne remplace pas les connexions dédiées pour les workloads critiques nécessitant une latence garantie, mais il les complète comme chemin de backup ou pour les sites secondaires.