Azure
Fly.io
Azure
Fly.io
No signals
Azure
Fly.io
Azure
Fly.io
Azure
Fly.io
No signals
Azure
No signals
Fly.io
Azure
No signals
Fly.io
Users: N/A
Storage: As credits allow
Limits: 30-day credit expiration, free tier services have strict limits, not all services eligible
Users: N/A
Storage: Separate
Limits: Basic support only, burstable instance
Users: N/A
Storage: Separate
Limits: Burstable performance, shared infrastructure
Users: Unlimited
Storage: N/A
Limits: Standard Support ($100/mo) has slower response, Developer ($29/mo) limited
Users: 1 user
Storage: 3GB
Limits: Community support only, No billing alerts, Free allowances don't cap bills
Users: Unlimited
Storage: Usage-based
Limits: No priority support, No SLA, Complex pricing to predict
Users: Per org
Storage: Usage-based
Limits: Usage costs can still spiral unexpectedly
Users: Custom
Storage: Custom
Limits: Must negotiate pricing, Long contract terms typical
| Feature | Azure | Fly.io |
|---|---|---|
| Infrastructure | ||
| Virtual Machines | ||
| Azure Kubernetes Service (AKS) | ||
| Firecracker micro-VMs | ||
| 60+ Global Regions Most of any provider | ||
| Azure Arc (Hybrid Cloud) Best hybrid solution | ||
| Performance | ||
| Global edge deployment 35+ regions | ||
| Auto-scaling | ||
| Storage | ||
| Azure Blob Storage | ||
| Pricing | ||
| Per-second billing | ||
| Billing alerts Not supported | ||
| Databases | ||
| Azure SQL Database | ||
| Managed Postgres Reliability issues reported | ||
| Networking | ||
| Private networking WireGuard | ||
| Custom domains | ||
| AI | ||
| Azure OpenAI Service Latency issues reported | ||
| Compute | ||
| Azure Functions | ||
| Features | ||
| GPU support For ML workloads | ||
| Built-in queues/workers Manual setup required | ||
| Integrations | ||
| Microsoft 365 Integration Native integration | ||
| Usability | ||
| Intuitive Portal Considered confusing | ||
