Azure vs AWS turns on one factor more than any other: how much Microsoft you already run. Azure is the natural fit for organisations standardised on Entra ID, Microsoft 365, Windows Server, and SQL Server, because licensing and identity carry straight over. AWS holds the largest market share in 2026 and wins on raw service breadth, DevOps maturity, and the size of its engineering and vendor ecosystem. If you are Microsoft-centric, evaluate Azure first; if you are Linux-first and cloud-native, AWS is usually the stronger default.
What changed in 2026
- Entra ID became the assumed identity layer for Azure shops, removing whole federation projects for teams already on Microsoft 365.
- Azure OpenAI Service stayed GPT-centric but deeply integrated with VNet isolation and compliance controls that large enterprises want.
- AWS Bedrock broadened its model catalogue — Claude, Llama, Mistral, and Amazon Nova make AWS the choice when model variety matters.
- Both improved governance tooling — Azure Management Groups and AWS Organizations both make multi-account or multi-subscription setups faster to bootstrap.
- FinOps reached parity — Azure Cost Management and AWS Cost Explorer are both competent, so third-party cost platforms are now optional.
Core service comparison
| Capability |
Azure |
AWS |
| Compute (VM) |
Virtual Machines |
EC2 |
| Managed Kubernetes |
AKS |
EKS |
| Serverless functions |
Azure Functions |
Lambda |
| Object storage |
Blob Storage |
S3 |
| Data warehouse |
Synapse Analytics |
Redshift |
| Managed SQL Server |
SQL Managed Instance |
RDS for SQL Server |
| Identity |
Entra ID |
IAM + Identity Center |
| AI / LLM gateway |
Azure OpenAI Service |
Bedrock (multi-model) |
| CDN |
Front Door |
CloudFront |
| Hybrid connectivity |
ExpressRoute |
Direct Connect |
Pricing leverage
Both clouds discount committed usage similarly; the decisive lever for Azure is existing Microsoft licensing.
Azure savings levers:
- Azure Hybrid Benefit: roughly 40–50% off Windows VM cost when you bring existing licences.
- Reserved VM Instances (1 or 3 year): 30–55% off.
- Dev/Test pricing via Visual Studio subscriptions for non-production.
AWS savings levers:
- Savings Plans and Reserved Instances: 30–60% off on-demand.
- Spot Instances: 60–80% off for interruptible workloads.
// Approximate monthly cost, one 4 vCPU Windows VM, 3-year commit
// Tiers only, not quotes -- confirm in each portal.
AWS EC2 (m6i.xlarge, Windows, Reserved): around $410/mo
Azure (D4s_v5, Reserved + Hybrid Benefit): around $220/mo
Azure (D4s_v5, Reserved, no Hybrid Benefit): around $380/mo near parity
Identity: Azure's structural edge
// Azure: an Entra ID group maps straight to a resource role
az role assignment create \
--assignee-object-id <group-object-id> \
--role "Contributor" \
--scope /subscriptions/<sub-id>/resourceGroups/my-rg
// AWS: federation usually needs Identity Center plus SAML setup
aws iam create-role --role-name MyRole \
--assume-role-policy-document file://trust-policy.json
If your laptops and Microsoft 365 already authenticate through Entra ID, Azure RBAC removes an identity-federation project. On AWS you would wire up IAM Identity Center plus SAML to reach the same place, which leans on the authentication vs authorization distinction worth understanding first.
How to pick
- Heavy Windows Server and SQL Server footprint? Azure. Hybrid Benefit often pays for the migration.
- Microsoft 365 and Teams are your collaboration layer? Azure, for the identity and integration story.
- Linux-first microservices with no Microsoft estate? AWS, for the wider catalogue.
- Need GPT-class models inside a compliance boundary? Azure OpenAI Service.
- Want the broadest choice of AI models? AWS Bedrock.
- No strong reason either way? AWS, for the larger support and hiring ecosystem.
Common mistakes
Assuming Azure is automatically cheaper. It is cheaper mainly with Hybrid Benefit and licence transfers in place. Greenfield Azure without those can cost more than AWS.
Underestimating Azure networking. VNets, NSGs, peering, and Private Endpoints have more moving parts than equivalent AWS VPC setups.
Running a .NET enterprise app on AWS with no Linux path. Azure App Service plus Entra ID plus SQL Managed Instance is a better-integrated stack for that case.
Treating multi-cloud as free. Dual operations doubles overhead; multi-region on one cloud is usually the better resilience bet.
FAQ
Is Azure better for .NET developers?
Yes, noticeably. Azure App Service deploys cleanly from Visual Studio or GitHub Actions, and Entra ID auth with ASP.NET Core is nearly zero-config.
Which cloud is bigger?
AWS holds the larger market share in 2026, with Azure a clear second. Bigger share means more documentation, vendors, and engineers, which matters for support.
Can I get OpenAI models on Azure?
Yes, through Azure OpenAI Service with enterprise controls. AWS offers a different set of models through Bedrock, including Claude, so the choice is integration depth versus model variety.
Which is better for a startup with no Microsoft licences?
AWS, by a wide margin, because the Hybrid Benefit advantage does not apply and the AWS ecosystem and hiring pool are larger.
Where to go next
AWS vs Google Cloud in 2026, the best backend languages in 2026, and how to deploy a website in 2026.