Azure Functions vs Cloudflare
A detailed comparison to help you choose between Azure Functions and Cloudflare.
Quick Verdict
4.0/5
Azure Functions
0 reviews
4.3/5
Cloudflare
0 reviews
Cloudflare is rated higher (4.3 vs 4.0). Azure Functions is Microsoft's serverless platform. 1M free executions/month. Durable Functions for long-running workflows. Best integration with .NET, Microsoft 365, and Azure services. Global network that speeds up and protects websites with CDN caching, DDoS protection, free SSL and DNS. Free plan; Pro costs $20/month billed annually ($25 monthly).
Azure Functions Microsoft serverless functions for .NET teams | Cloudflare Global CDN and DDoS protection with object storage | |
|---|---|---|
| Overview | ||
| Rating | 4.0 (0 reviews) | 4.3 (0 reviews)✓ |
| Pricing model | usage-based | freemium |
| Starting price | Free tier available✓ | From $20/mo |
| Best for | Microsoft/.NET teams building event-driven processing, workflows (Durable Functions), and spiky APIs inside the Azure ecosystem | Websites and SaaS front ends that want a free or flat-priced global CDN with DDoS protection and TLS included — and can accept proxying all traffic through one vendor. |
| Features | ||
| IPv6 | ✓ | |
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Data-center locations | ||
| Regions | — | Global — 300+ cities |
| Tags | ||
| Tags | free tierapi accessus datacentereu datacenterapac datacenter | free tiers3 compatibleddos protectioneu datacenterus datacenterapac datacenterapi accessipv6terraform provider |
| Visit Azure Functions → | Visit Cloudflare → | |
Azure Functions
Pros
- + Permanent free grant of 1 million executions and 400,000 GB-s per month
- + Trigger/binding integrations cover most Azure and third-party services declaratively
- + Durable Functions for stateful orchestration — the strongest workflow story among serverless platforms
- + Hosting plan ladder (Consumption, Flex, Premium, Dedicated, Container Apps) covers most cost/performance points
- + 99.95% SLA with service credits scaling up to 100% below 95% uptime
Cons
- - Cold starts on Consumption hurt latency-sensitive HTTP workloads
- - Per-instance limits (1.5 GB RAM, 1 core) cap what single functions can do
- - Azure surface area: storage account, monitoring, identity, and networking costs stack up
- - Bindings and Durable Functions abstractions lock integration logic to Azure
- - Premium costs real money whether or not traffic flows (EP1 ~$146/month US rates)
Cloudflare
Pros
- + Unmetered bandwidth and requests on every plan, including Free
- + Free managed WAF ruleset, Universal SSL and unmetered DDoS protection by default
- + 330+ city network with Anycast routing and no region pricing
- + Flat per-domain pricing is easy to budget; no egress surprises
- + Terraform provider and full API for configuration as code
Cons
- - No uptime SLA below the Business plan
- - Per-domain billing gets expensive for domain portfolios
- - Advanced WAF tuning and rate limiting are plan-gated
- - Proxy architecture is a concentration risk during network-level incidents
- - Large feature surface means caching misconfigurations can go unnoticed
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