AWS Lambda vs Cloudflare
A detailed comparison to help you choose between AWS Lambda and Cloudflare.
Quick Verdict
4.1/5
AWS Lambda
0 reviews
4.3/5
Cloudflare
0 reviews
Cloudflare is rated higher (4.3 vs 4.1). AWS Lambda is the original FaaS service — run code without servers. Supports 15+ runtimes, 1M free requests/month, and integrates deeply with 200+ AWS services. Triggered by S3, DynamoDB, API Gateway, and more. 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).
 AWS Lambda The original serverless functions service | Cloudflare Global CDN and DDoS protection with object storage | |
|---|---|---|
| Overview | ||
| Rating | 4.1 (0 reviews) | 4.3 (0 reviews)✓ |
| Pricing model | freemium (pay per request + GB-second; MicroVMs/Managed Instances metered differently) | freemium |
| Starting price | Free tier available✓ | From $20/mo |
| Best for | AWS developers building event-driven, variable-traffic workloads — webhooks, media processing, scheduled jobs, API backends — who want to stop managing servers entirely | 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 | All 39 AWS regions / 124 AZs | Global — 300+ cities |
| Tags | ||
| Tags | free tierapi accessus datacentereu datacenterapac datacenter | free tiers3 compatibleddos protectioneu datacenterus datacenterapac datacenterapi accessipv6terraform provider |
| Visit AWS Lambda → | Visit Cloudflare → | |
AWS Lambda
Pros
- + Zero idle cost with a free tier that covers small products: 1M requests and 400,000 GB-seconds monthly
- + Graviton pricing at $0.0000133334 per GB-second undercuts x86 by roughly 20%
- + Automatic multi-AZ scaling with a 99.95% per-region SLA and no capacity planning
- + Deep event integration across AWS services, with three form factors (Event/Web Functions, MicroVMs)
Cons
- - Per-request and GB-second pricing gets expensive against committed compute at steady high utilization
- - Cold starts — hundreds of milliseconds to seconds depending on runtime — with provisioned concurrency as an extra meter
- - 15-minute execution limit and payload caps make it wrong for long-running batch work
- - AWS-specific event plumbing creates real lock-in; distributed event chains are hard to debug
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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