Microsoft Azure vs Fly.io

Microsoft Azure is strongest for enterprises. Fly.io is strongest for full-stack apps needing global low latency. Here's how they stack up on price, uptime, and support.

Feature	Microsoft Azure	Fly.io
Starting price	$0.01/mo	$0.01/mo
Best for	Enterprises Windows/.NET workloads Hybrid cloud Regulated industries	Full-stack apps needing global low latency Docker-native deploys Small teams wanting per-second billing Postgres close to compute
Stated uptime SLA	99.99%	No blanket platform SLA published; Enterprise support plans include custom SLAs
Storage	SSD	SSD
Regions	60	35
Managed Kubernetes	Yes	Yes
Support channels	Ticket, Phone (paid plans), Docs, Community forum	Community forum, Docs, Ticket (paid support plans), Enterprise Slack (Enterprise plan)
Compliance	SOC 2, ISO 27001, HIPAA, FedRAMP, GDPR, PCI DSS	SOC 2
Hidden costs to watch for	Windows Server VMs carry a license surcharge on top of the Linux compute rate Outbound bandwidth billed above 100 GB/month pooled free tier, tiered by volume Premium SSD/Ultra Disk IOPS and throughput billed separately from disk capacity Blob Storage Cool/Cold/Archive tiers bill a minimum 128 KiB per object and impose early-deletion penalties (90/180 day minimums) Archive tier retrieval fees are notably high ($6.50/10,000 read ops) AKS Standard tier control plane fee ($0.10/hr per cluster) on top of node VM costs	Machine prices vary by region -- the reference/base rates in this dataset are for the Amsterdam (ams) region; several regions carry a price premium Extra RAM beyond a preset's base allocation is billed separately (~$5 per 30 days per additional GB, prorated per-second) Stopped Machines still incur a rootfs storage charge of $0.15/GB per month Volume snapshots are billed at $0.08/GB per month above the first 10GB free per month Dedicated (non-shared) egress IPs are billed hourly (~$0.005/hr, ~$3.60/mo) in addition to the free shared IPv4 Cross-region private networking traffic is billed per GB and varies sharply by region group (Africa/India up to $0.12/GB egress) Wildcard/extra SSL certificates beyond the first 10 free per org are billed monthly
Last reviewed	2026-07-18	2026-07-18