Azure vs AWS vs GCP: cloud comparison 2026

Choosing your cloud infrastructure is not a technical decision. It is a strategic decision that commits the organization for several years, with implications for costs, data security, sovereignty, innovation capacity, and dependence on an American vendor subject to the Cloud Act.

Azure Cloud , AWS, and GCP together represent approximately 70% of the European cloud infrastructure services market. None of the three is universally superior. Each has distinct strengths that are suited to specific organizational contexts.

This guide provides you with an operational comparison and a concrete decision guide to choose the cloud platform best suited to your organization.

• AWS remains the leading cloud provider in Europe, with an estimated market share of around 30% .
• Microsoft Azure occupies second place, with an estimated market share of around 25% , and benefits from a strong presence among large European companies.
• Google Cloud ranks third, with an estimated market share of around 15% , and continues its progress, particularly in uses related to AI, data and analytics.

Azure, AWS, GCP: Market overview in 2026

The three actors and their positioning

AWS (Amazon Web Services) is the managed cloud service provider with the largest service catalog on the market. Launched in 2006, it has set industry standards and boasts the most developed ecosystem of partners and integrators. It is the go-to choice for organizations seeking access to the broadest catalog of IT services (over 200 managed services).

Microsoft Azure has become the cloud of choice for companies already embedded in the Microsoft ecosystem (Microsoft 365, Teams, Entra IS, SQL Server). Its native integration with Microsoft tools, its identity management via Entra ID (formerly Azure Active Directory), and its hybrid cloud offering make it the dominant choice for large European companies and government agencies.

Google Cloud Platform (GCP) is Google's native cloud, built on the same data centers and infrastructure as Google services (Search, Maps, YouTube). It stands out for its AI and machine learning capabilities and its open-source approach with Kubernetes, which it helped create.

Key trends in 2026

Three trends are reshaping the cloud market in 2026.

Access to AI services is becoming a major differentiating factor, particularly for real-time processing and large-scale inference capabilities. The three key players have invested heavily in managed generative AI services: Azure OpenAI Service, AWS Bedrock, and Google Vertex AI.

Data sovereignty has become a non-negotiable requirement for European organizations. Every cloud service provider has launched sovereign offerings in France or Europe to comply with GDPR and Cloud Act requirements.

Multi-cloud is becoming the norm. The majority of large organizations use several clouds in parallel to avoid dependence on a single provider and to optimize costs according to use cases.

Technical comparison: strengths and weaknesses

Azure cloud: Enterprise and hybrid excellence

Microsoft Azure excels in three areas. Integration with the Microsoft ecosystem is unbeatable: if your organization already uses Microsoft 365, Teams, Entra ID or SQL Server, Azure offers technical continuity and economies of scale that neither AWS nor GCP can match.

Hybrid cloud is the configuration in which an organization distributes its workloads between its private cloud, its on-premise infrastructure and one or more public clouds, managing them in a unified manner.

Azure Stack and Azure Arc are the most mature solutions on the market for driving a hybrid architecture, allowing Azure services to run directly in a private datacenter.

Finally, Azure is the most adopted platform in European administrations and large companies, with a particularly dense network of certified partners and integrators in France.

AWS: Maturity and Breadth

AWS boasts the broadest service catalog, the largest developer community, and the richest marketplace ecosystem. Its operational maturity (reliability, SLAs, documentation) is unmatched. It's the preferred choice for startups, SaaS vendors, and organizations looking to maximize their access to innovative cloud services.

GCP: AI and data

GCP stands out for the quality of its data analytics services (BigQuery, Dataflow, Pub/Sub) and AI (Vertex AI, TPUs). BigQuery for analytical data storage, Vertex AI for MLOps, and TPUs for model training: GCP offers the most coherent data and AI stack of the three players. Its open-source approach (Kubernetes, Istio, Knative) is also an advantage for organizations that want to avoid vendor lock-in.

Microservices and Kubernetes

Microservices are a software architecture that breaks down applications into independent services that communicate via APIs. All three platforms offer managed Kubernetes services (AKS on Azure, EKS on AWS, and GKE on GCP) to orchestrate these microservices in production. GKE is historically considered the most mature, AWS EKS the most integrated into the AWS ecosystem, and AKS the easiest for Microsoft teams to manage.

Complete comparison table

Selection criteria according to your context

You are in the Microsoft ecosystem

Azure is the natural choice. Native integration with Microsoft 365, Teams, Active Directory, SQL Server, and Dynamics 365 generates real operational savings and reduces administrative complexity. Existing Microsoft licenses can be reused via Azure Hybrid Benefit.

You have intensive AI and data needs

GCP is the most powerful choice for organizations that have made AI and machine learning their core business. BigQuery for analytics, Vertex AI for MLOps, TPUs for model training: GCP offers the most coherent data and AI stack of the three players.

You are looking for maturity and breadth of services

AWS is the safest choice for organizations that want access to the broadest service catalog, the richest partner ecosystem, and the most proven SLAs. It's also the cloud most used by SaaS vendors, making integrations with your business tools easy.

You have sovereignty requirements

S3NS is a joint venture between Thales and Google Cloud. Its PREMI3NS offering is SecNumCloud certified by ANSSI: it is currently the only offering backed by one of the three hyperscalers to have this certification in France.

Bleu, a joint venture between Orange and Capgemini, offers services in France based on Microsoft Azure and Microsoft 365. It is currently engaged in the SecNumCloud 3.2 qualification process: qualification has not yet been achieved.

AWS does not currently offer a SecNumCloud-qualified sovereign cloud in France. However, in January 2026, AWS launched its AWS European Sovereign Cloud, the first region of which is located in Brandenburg, Germany, with European governance and staff.

Data sovereignty and the Cloud Act: what French organizations need to know

The US Cloud Act (Clarifying Lawful Overseas Use of Data Act) requires American companies, including Microsoft, Amazon, and Google, to hand over data hosted on their infrastructure, including data stored in Europe, to US authorities upon simple judicial request. This law applies independently of the GDPR and the contractual commitments of cloud providers.

Sovereign solutions available in France

Bleu, a joint venture owned by Orange and Capgemini, offers Microsoft Azure and Microsoft 365-based services in France within a dedicated infrastructure, operated in France and protected against extraterritorial non-European laws. Its Azure offering is currently undergoing SecNumCloud 3.2 qualification with the French National Cybersecurity Agency (ANSSI), with a stated objective of obtaining it by the end of 2026.

S3NS, a Thales subsidiary leveraging Google Cloud technologies, offers PREMI3NS, a Trusted Cloud solution certified SecNumCloud 3.2 by the French National Cybersecurity Agency (ANSSI) since December 2025. The infrastructure is hosted in three data centers in France and operated by S3NS. The offering is also HDS certified and provides access to a wide range of IaaS, PaaS, and CaaS services from Google Cloud.

Since January 2026, AWS has offered the AWS European Sovereign Cloud, a cloud infrastructure separate and independent from traditional AWS regions. Its first region is located in Brandenburg, Germany, with infrastructure entirely located within the European Union and daily operations controlled by EU-based staff.

What this means in concrete terms for your organization

If you are processing health data, sensitive personal data, government data or strategic information, deployment on a qualified sovereign cloud is not an option but a regulatory obligation or a contractual requirement.

For other organizations, the Cloud Act risk should be assessed as part of your data protection strategy and your GDPR impact assessment (DPIA).

Smile and the Azure cloud: our expertise

At Smile, we have been supporting organizations in their cloud strategy for over ten years. Our Azure cloud expertise is particularly recognized: designing Azure architectures, training cloud administrator teams, migrating from on-premises infrastructures, deploying hybrid solutions with Azure Arc, integrating Azure AI services, implementing a robust cloud security strategy, and supporting organizations subject to sovereignty requirements towards Azure.

Our approach is agnostic in that we recommend the platform best suited to each client's context. However, our in-depth expertise in Microsoft Azure, combined with our understanding of the sovereignty challenges faced by French organizations, makes it our preferred recommendation for the majority of our Enterprise and public sector clients.

You want to define your cloud strategy and compare cloud solutions .

Frequently asked questions about choosing between Azure, AWS, and GCP

Can multiple cloud services be used simultaneously?

Yes, that's what we call a multi-cloud strategy. It allows you to avoid dependence on a single provider, optimize costs according to use cases, and access the best capabilities of each cloud platform.

In practice, it increases operational complexity and requires unified management tools (Terraform/OpenTofu for infrastructure as code, Kubernetes for containerized workloads) and teams with skills across multiple platforms.

Is Azure more expensive than AWS or GCP?

The three providers have comparable pricing policies for equivalent services. Differences in actual cost depend largely on resource optimization, consumption commitments (Reserved Instances, Savings Plans), and negotiated discounts.

For organizations that are already Microsoft customers, Azure Hybrid Benefit and Enterprise Agreements can make Azure significantly cheaper than it initially appears.

What is SecNumCloud and why is it important?

SecNumCloud is the ANSSI qualification framework for cloud IT service providers. It guarantees that the provider meets high requirements for data security, reversibility, and protection against extraterritorial laws such as the Cloud Act.

For critical infrastructure operators (OIVs), essential service providers (OSEs), and public administrations, using a SecNumCloud-qualified cloud is mandatory. For other organizations, it's a strong signal of maturity and reliability.

How to migrate to Azure from an on-premises infrastructure?

An Azure migration unfolds in four stages: auditing the existing infrastructure and defining the target cloud (lift-and-shift, replatforming, or refactoring), the migration itself in waves based on application criticality, post-migration optimization (rightsizing, reservations, decommissioning unused resources), and implementing cloud governance (Azure Policy, Cost Management, Security Center). A Microsoft-certified integrator can perform this migration while minimizing risks and service interruptions.