Ask three architects which cloud to pick and you will get three confident, contradictory answers. The truth is less exciting: for most workloads the big three are interchangeable on raw capability. The decision is about fit, not features.
Start with where your data and skills already are
If your company runs Microsoft 365, Active Directory, and .NET, Azure removes the most friction. If your data team lives in BigQuery and notebooks, GCP is the path of least resistance. If you want the widest service catalogue and the deepest hiring pool, AWS is the safe default.
Quick heuristics
- Pick AWS when breadth, maturity, and hiring matter most.
- Pick Azure when you are already a Microsoft and enterprise-identity shop.
- Pick GCP when data, analytics, and Kubernetes are the centre of gravity.
The cost conversation
Headline compute prices are within a rounding error of each other. Your real bill is driven by egress, managed-service premiums, and how disciplined you are about turning things off. Architecture and FinOps habits move the number far more than the logo on the invoice.
- Egress: moving data out — and between regions — is where surprise costs hide.
- Managed services: convenient, but the premium adds up at scale.
- Idle resources: non-production environments left running overnight quietly dominate many bills.
You rarely regret the cloud you chose. You regret the architecture you let sprawl across it.
On multi-cloud
Multi-cloud is a real strategy for resilience and leverage, but it doubles your operational surface — two sets of tooling, monitoring, IAM models, and expertise. For most teams, going deep on one provider and staying portable at the edges beats running everything twice.
A decision in three questions
- Where does your data and identity already live? Favour the cloud that is closest.
- What can your team operate well today? Skills are a bigger lever than features.
- What does resilience actually require? Often a second region, not a second cloud.
Answer those honestly and the choice usually makes itself — and you spend your energy on the architecture and cost discipline that actually determine whether the migration pays off.
