OVHcloud has hit an important milestone with its 3-AZ region in Paris. Three geographically separated Availability Zones, 99.99% SLA, and — crucially for cost-conscious teams — no additional traffic charges between zones. This makes OVHcloud a serious alternative for companies seeking hyperscaler-level availability without hyperscaler pricing.

What is a 3-AZ Region?
Why Does This Matter for Cloud Exit?
Which Services Are Available?
Cost Comparison: AWS vs. OVHcloud 3-AZ
Typical Use Cases
Conclusion: European Alternative at Hyperscaler Level
Cloud Exit to OVHcloud with OutaCloud

What is a 3-AZ Region?

An Availability Zone (AZ) is an isolated cluster of data centers with independent power, cooling, and network infrastructure. A 3-AZ region combines three such zones that are physically separated but close enough to enable low-latency communication.

The OVHcloud Paris region (eu-west-par) consists of:

Zone	Identifier
Zone A	eu-west-par-a
Zone B	eu-west-par-b
Zone C	eu-west-par-c

All three data centers are approximately 30 km apart — far enough for isolation during local failures, close enough for synchronous replication with minimal latency.

Why Does This Matter for Cloud Exit?

Until now, a common argument against European providers was: "They don't have multi-AZ, so no real high availability." With the 3-AZ region in Paris, that argument no longer applies.

1. True High Availability

Workloads can be distributed across three physically separated zones. If one zone fails completely, the others remain available. This is the same architectural principle used by AWS, Azure, and GCP.

2. 99.99% SLA

OVHcloud offers a 99.99% availability SLA for services in the 3-AZ region — comparable to what hyperscalers guarantee for multi-AZ deployments.

3. No Inter-AZ Traffic Costs

Here's where it gets interesting: AWS charges $0.01 per GB in each direction for data transfers between Availability Zones. With a database using synchronous replication across three AZs, this adds up quickly.

OVHcloud charges no additional fees for traffic within the 3-AZ region. For data-intensive workloads, this can save hundreds to thousands of euros per month.

Which Services Are Available?

Bare Metal (Already Available)

Dedicated servers from the Scale and HGR series can be deployed in any of the three zones. Ideal for:

Proxmox clusters with high availability
Distributed database clusters (PostgreSQL, MySQL, MongoDB)
Kubernetes nodes spread across multiple AZs

Object Storage 3-AZ (Since 2025)

OVHcloud offers S3-compatible Object Storage that automatically replicates data across all three zones:

99.99% SLA
S3-compatible API
Optional replication to other OVHcloud regions (Roubaix, Gravelines, Strasbourg)

Particularly relevant for companies in regulated industries (finance, healthcare) that need to demonstrate data resilience.

Public Cloud (Roadmap)

OVHcloud plans to integrate additional Public Cloud services into the 3-AZ architecture:

Compute instances
Block Storage
Managed Databases
Networking services

Cost Comparison: AWS vs. OVHcloud 3-AZ

Let's take a typical setup: 3-node PostgreSQL cluster with synchronous replication across three AZs, 500 GB database each, 1 TB daily replication traffic.

Cost Item	AWS (eu-central-1)	OVHcloud (eu-west-par)
Compute (3x m5.xlarge equivalent)	~$450/month	~€180/month
Storage (3x 500 GB)	~$150/month	~€75/month
Inter-AZ Traffic (1 TB/day)	~$600/month	€0
Total	~$1,200/month	~€255/month

Savings: ~80% — with comparable architecture and SLA.

Typical Use Cases

The 3-AZ region is particularly suited for:

Critical databases with synchronous replication (PostgreSQL, MySQL, MariaDB)
Kubernetes clusters with nodes in multiple AZs for pod spreading
Proxmox clusters with HA and distributed Ceph storage
Object storage for backups, media assets, data lakes

Conclusion: European Alternative at Hyperscaler Level

With the 3-AZ region in Paris, OVHcloud closes an important gap. Companies that:

Need high availability,
Want predictable costs,
Must keep data in the EU,
Don't want to pay for inter-AZ traffic,

now have a valid European alternative. The combination of 99.99% SLA, three physically separated zones, and included traffic makes OVHcloud a serious option for cloud exit strategies.

Cloud Exit to OVHcloud with OutaCloud

Considering a migration from AWS, Azure, or GCP to OVHcloud? OutaCloud supports you from architecture analysis to go-live.

Migration to OVHcloud:

AWS to OVHcloud — Migrate EC2, RDS, and S3 to OVHcloud 3-AZ
Azure to OVHcloud — Replace Azure VMs and managed services
Google Cloud to OVHcloud — Move GCP workloads to European infrastructure
VMware to OVHcloud — From VMware licenses to open-source virtualization

What we offer:

Migration of existing workloads to OVHcloud 3-AZ
Setup of Proxmox clusters with multi-AZ high availability
Managed database services on European infrastructure
Ongoing monitoring and support

Request your free analysis →

OVHcloud 3-AZ Region Paris: High Availability Without Hyperscaler Costs

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