Azure Functions vs Cloudflare Workers
A detailed comparison to help you choose between Azure Functions and Cloudflare Workers.
Quick Verdict
4.0/5
Azure Functions
0 reviews
4.3/5
Cloudflare Workers
0 reviews
Cloudflare Workers 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. Run JavaScript, Python, and Rust functions at the edge with sub-millisecond latency. Ideal for APIs, middleware, and full-stack applications needing global distribution.
Azure Functions Microsoft serverless functions for .NET teams | Cloudflare Workers Deploy serverless code globally on Cloudflare's edge network | |
|---|---|---|
| Overview | ||
| Rating | 4.0 (0 reviews) | 4.3 (0 reviews)✓ |
| Pricing model | usage-based | freemium |
| Starting price | Free tier available | Free tier available |
| Best for | Microsoft/.NET teams building event-driven processing, workflows (Durable Functions), and spiky APIs inside the Azure ecosystem | Latency-sensitive APIs, middleware, edge rendering and full-stack applications that want global deployment with no infrastructure to run — especially teams already using Cloudflare's storage and CDN products. |
| Specifications (entry plan) | ||
| CPU cores | — | 10 vCPU |
| RAM | — | — |
| Storage | — | 1 GB |
| Bandwidth | — | — |
| SLA uptime | — | 100% |
| Data-center count | — | 330 |
| €/vCPU/mo | — | €0.00 |
| 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 tierddos protectionipv6eu datacenterus datacenterapac datacenterapi accessopen source |
| Visit Azure Functions → | Visit Cloudflare Workers → | |
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 Workers
Pros
- + No cold starts: V8 isolates start in microseconds at 330+ locations
- + CPU-time billing with a genuinely usable free tier (100k requests/day)
- + No egress or bandwidth charges on any plan
- + Storage stack (KV, D1, Durable Objects, R2) binds declaratively and stays in-network
- + Strong docs: pricing and limits pages are explicit and example-driven
Cons
- - CPU time caps exclude compute-heavy and long-running workloads
- - Real vendor lock-in through Durable Objects, bindings and deployment model
- - KV writes ($5.00/M) and Durable Objects duration billing surprise stateful designs
- - Conceptual shift for teams used to container-based serverless
- - No uptime SLA below the Business plan
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