CDN Comparison 2025
AWS CloudFront vs Cloudflare: CDN Comparison for 2025
A technical comparison of CloudFront and Cloudflare — WAF cost models, edge compute capabilities, DDoS protection, and when AWS-native integration outweighs Cloudflare's simplicity.
<div class="quick-answer"> **Quick Answer:** Cloudflare wins for simplicity, free tier generosity, and global CDN. CloudFront wins when tight AWS service integration (ALB, S3, WAF, Lambda@Edge) is required. </div> CloudFront and Cloudflare both accelerate content delivery and protect origins from malicious traffic — but they are built around fundamentally different assumptions. CloudFront is an AWS-native service optimized for deep integration with the AWS ecosystem. Cloudflare is a standalone network security and performance platform that works with any infrastructure. Choosing between them is as much an organizational decision as a technical one. ## Overview | | AWS CloudFront | Cloudflare | | --------------- | ------------------------------------------------ | ------------------------------------------------------- | | Network size | ~600 edge locations | 300+ PoPs (denser in emerging markets) | | Business model | Pay-as-you-go (AWS billing) | Tiered plans (Free / Pro / Business / Enterprise) | | Core strength | AWS-native integration | Developer experience, zero cold starts, simpler pricing | | Edge compute | Lambda@Edge, CloudFront Functions | Workers (V8 isolates, 0 cold start) | | WAF | AWS WAF (separate charge) | Included in Pro/Business plans | | DDoS protection | Shield Standard (free), Shield Advanced ($3K/mo) | Free unmetered DDoS on all plans | | Free tier | 12-month AWS Free Tier, then pay-as-you-go | Permanent free tier with unlimited bandwidth | ## WAF Cost Model: A Critical Difference WAF costs are where the two platforms diverge most sharply in pricing model. **AWS WAF pricing:** - $5.00/month per WebACL - $1.00/month per rule group - $0.60 per million requests evaluated A typical production WebACL with 10 custom rules processing 100 million requests/month costs approximately $65/month before any data transfer. If you also need bot control or account takeover prevention rules, add another $10/month each. **Cloudflare WAF pricing:** - Included in Pro ($20/month) — managed rule sets, rate limiting, 5 custom rules - Included in Business ($200/month) — full managed WAF, 20 custom rules, OWASP ruleset - Enterprise — custom pricing with advanced rule sets For a medium-traffic application running 500 million requests/month with a full managed WAF ruleset, Cloudflare Business is significantly cheaper than equivalent CloudFront + AWS WAF. The math changes for organizations that are already paying for AWS Shield Advanced — Shield Advanced includes AWS WAF usage at no extra charge for resources it protects, effectively making WAF free if you need advanced DDoS protection anyway. ## Edge Compute: Lambda@Edge vs Cloudflare Workers Edge compute is where the architectural differences are most significant. | | Lambda@Edge | CloudFront Functions | Cloudflare Workers | | ------------------ | ------------------------------ | ------------------------- | ---------------------------------- | | Cold start | 100–500 ms | < 1 ms | ~0 ms (V8 isolates) | | Max execution time | 30 s (viewer) / 30 s (origin) | 1 ms | 50 ms (CPU time) | | Memory | 128 MB – 10 GB | 2 MB | 128 MB | | Runtimes | Node.js, Python | JavaScript (ES5) | JS, TS, Python, Rust, WASM | | AWS SDK access | Yes | No | No (use fetch) | | Locations | 13 regional caches | 600+ edge locations | 300+ PoPs | | Pricing | Lambda pricing + data transfer | $0.10/million invocations | 100K/day free, $0.30/million after | **When Lambda@Edge is the right choice:** - You need AWS SDK access at the edge (calling DynamoDB, Secrets Manager, etc.) - Your edge logic uses IAM authentication or AWS service APIs - You are performing A/B testing, authentication, or URL rewriting that benefits from AWS IAM integration - Your team is already operating Lambda functions and prefers operational consistency **When Cloudflare Workers is the right choice:** - Cold start latency is unacceptable (sub-millisecond response time requirements) - You need edge compute in markets where CloudFront regional caches are sparse - You are building Worker-native patterns (Durable Objects, KV storage, R2 integration) - Your infrastructure is multi-cloud or not AWS-centric CloudFront Functions fills a middle ground — extremely fast (< 1 ms) and cheap for simple header manipulation, URL rewrites, and redirects, but limited to ES5 JavaScript with 2 MB memory and no external calls. ## DDoS Protection Both platforms provide DDoS mitigation, but the model differs. **CloudFront + AWS Shield:** - Shield Standard is free and included automatically — protects against common Layer 3/4 attacks - Shield Advanced ($3,000/month + data transfer fees) adds Layer 7 protection, attack diagnostics, DDoS cost protection, and 24/7 access to AWS DDoS Response Team (DRT) - Shield Advanced is typically justified only for organizations with regular DDoS events or regulatory requirements for incident response documentation **Cloudflare:** - Unmetered DDoS protection is included on all plans, including the free tier - No separate DDoS product to purchase or configure - Cloudflare's network scale (absorbing attacks at the network edge before traffic reaches your origin) is a genuine architectural advantage For most organizations, Cloudflare's DDoS story is simpler and cheaper. The exception is organizations that need AWS Shield Advanced's compliance documentation, cost protection guarantees, or the DRT's direct involvement during incidents. ## Integration Depth with AWS CloudFront's integration with the AWS ecosystem is where it has a clear and durable advantage. | Integration | CloudFront | Cloudflare | | ------------------------ | ------------------------------- | -------------------------- | | S3 Origin Access Control | Native (OAC) | Manual workaround required | | API Gateway origins | Direct integration | Reverse proxy only | | ALB/EC2 origins | Direct integration | Reverse proxy only | | CloudWatch metrics | Native, built-in | Third-party integration | | AWS WAF | Native association | Not applicable | | IAM-based signed URLs | Native (CloudFront signed URLs) | Not equivalent | | VPC origins | Supported | Not supported | | ACM certificates | Free, automatic renewal | Free (via Cloudflare) | If your application is fully AWS-native — S3-hosted assets, API Gateway, ALB origins, WAF rules, CloudWatch dashboards — CloudFront is the lower-complexity option. Introducing Cloudflare adds a second control plane, a second DNS provider (or split DNS configuration), and a second point of failure. ## Free Tier and Entry-Level Pricing | | CloudFront | Cloudflare | | ------------------------------ | ----------------------------------------------- | -------------------------------------- | | Free tier type | 12-month AWS Free Tier only | Permanent free tier | | Data transfer (free) | 1 TB/month (12 months) | Unlimited (rate-limited) | | HTTP/S requests (free) | 10 million/month (12 months) | Unlimited | | SSL/TLS | Free (via ACM) | Free | | DDoS protection | Shield Standard (free, always) | Included on all plans | | WAF | Not included free | Not on free plan (Pro+) | | Edge compute | CloudFront Functions: 2M invocations/month free | Workers: 100K requests/day free | | After free tier | Pay-as-you-go (no minimum) | Free plan continues (limited features) | | Bandwidth cost example (10 TB) | ~$85/month | $0 on Pro plan | ## Related Comparisons Explore other technical comparisons: - [AWS vs Azure for Enterprise](/compare/aws-vs-azure-for-enterprise) ## Why Work With FactualMinds FactualMinds is an **AWS Select Tier Consulting Partner** — a verified AWS designation earned through demonstrated technical expertise and customer success. Our architects have run production workloads for companies from seed-stage startups to enterprises. - **AWS Select Tier Partner** — verified by AWS Partner Network - **Architecture-first approach** — we evaluate your specific workload before recommending a solution - **No lock-in consulting** — we document everything so your team can operate independently - [AWS Marketplace Seller](https://aws.amazon.com/marketplace/seller-profile?id=seller-m753gfqftla7y) ---
Quick Answer: Cloudflare wins for simplicity, free tier generosity, and global CDN. CloudFront wins when tight AWS service integration (ALB, S3, WAF, Lambda@Edge) is required.
CloudFront and Cloudflare both accelerate content delivery and protect origins from malicious traffic — but they are built around fundamentally different assumptions. CloudFront is an AWS-native service optimized for deep integration with the AWS ecosystem. Cloudflare is a standalone network security and performance platform that works with any infrastructure.
Choosing between them is as much an organizational decision as a technical one.
Overview
| AWS CloudFront | Cloudflare | |
|---|---|---|
| Network size | ~600 edge locations | 300+ PoPs (denser in emerging markets) |
| Business model | Pay-as-you-go (AWS billing) | Tiered plans (Free / Pro / Business / Enterprise) |
| Core strength | AWS-native integration | Developer experience, zero cold starts, simpler pricing |
| Edge compute | Lambda@Edge, CloudFront Functions | Workers (V8 isolates, 0 cold start) |
| WAF | AWS WAF (separate charge) | Included in Pro/Business plans |
| DDoS protection | Shield Standard (free), Shield Advanced ($3K/mo) | Free unmetered DDoS on all plans |
| Free tier | 12-month AWS Free Tier, then pay-as-you-go | Permanent free tier with unlimited bandwidth |
WAF Cost Model: A Critical Difference
WAF costs are where the two platforms diverge most sharply in pricing model.
AWS WAF pricing:
- $5.00/month per WebACL
- $1.00/month per rule group
- $0.60 per million requests evaluated
A typical production WebACL with 10 custom rules processing 100 million requests/month costs approximately $65/month before any data transfer. If you also need bot control or account takeover prevention rules, add another $10/month each.
Cloudflare WAF pricing:
- Included in Pro ($20/month) — managed rule sets, rate limiting, 5 custom rules
- Included in Business ($200/month) — full managed WAF, 20 custom rules, OWASP ruleset
- Enterprise — custom pricing with advanced rule sets
For a medium-traffic application running 500 million requests/month with a full managed WAF ruleset, Cloudflare Business is significantly cheaper than equivalent CloudFront + AWS WAF. The math changes for organizations that are already paying for AWS Shield Advanced — Shield Advanced includes AWS WAF usage at no extra charge for resources it protects, effectively making WAF free if you need advanced DDoS protection anyway.
Edge Compute: Lambda@Edge vs Cloudflare Workers
Edge compute is where the architectural differences are most significant.
| Lambda@Edge | CloudFront Functions | Cloudflare Workers | |
|---|---|---|---|
| Cold start | 100–500 ms | < 1 ms | ~0 ms (V8 isolates) |
| Max execution time | 30 s (viewer) / 30 s (origin) | 1 ms | 50 ms (CPU time) |
| Memory | 128 MB – 10 GB | 2 MB | 128 MB |
| Runtimes | Node.js, Python | JavaScript (ES5) | JS, TS, Python, Rust, WASM |
| AWS SDK access | Yes | No | No (use fetch) |
| Locations | 13 regional caches | 600+ edge locations | 300+ PoPs |
| Pricing | Lambda pricing + data transfer | $0.10/million invocations | 100K/day free, $0.30/million after |
When Lambda@Edge is the right choice:
- You need AWS SDK access at the edge (calling DynamoDB, Secrets Manager, etc.)
- Your edge logic uses IAM authentication or AWS service APIs
- You are performing A/B testing, authentication, or URL rewriting that benefits from AWS IAM integration
- Your team is already operating Lambda functions and prefers operational consistency
When Cloudflare Workers is the right choice:
- Cold start latency is unacceptable (sub-millisecond response time requirements)
- You need edge compute in markets where CloudFront regional caches are sparse
- You are building Worker-native patterns (Durable Objects, KV storage, R2 integration)
- Your infrastructure is multi-cloud or not AWS-centric
CloudFront Functions fills a middle ground — extremely fast (< 1 ms) and cheap for simple header manipulation, URL rewrites, and redirects, but limited to ES5 JavaScript with 2 MB memory and no external calls.
DDoS Protection
Both platforms provide DDoS mitigation, but the model differs.
CloudFront + AWS Shield:
- Shield Standard is free and included automatically — protects against common Layer 3/4 attacks
- Shield Advanced ($3,000/month + data transfer fees) adds Layer 7 protection, attack diagnostics, DDoS cost protection, and 24/7 access to AWS DDoS Response Team (DRT)
- Shield Advanced is typically justified only for organizations with regular DDoS events or regulatory requirements for incident response documentation
Cloudflare:
- Unmetered DDoS protection is included on all plans, including the free tier
- No separate DDoS product to purchase or configure
- Cloudflare’s network scale (absorbing attacks at the network edge before traffic reaches your origin) is a genuine architectural advantage
For most organizations, Cloudflare’s DDoS story is simpler and cheaper. The exception is organizations that need AWS Shield Advanced’s compliance documentation, cost protection guarantees, or the DRT’s direct involvement during incidents.
Integration Depth with AWS
CloudFront’s integration with the AWS ecosystem is where it has a clear and durable advantage.
| Integration | CloudFront | Cloudflare |
|---|---|---|
| S3 Origin Access Control | Native (OAC) | Manual workaround required |
| API Gateway origins | Direct integration | Reverse proxy only |
| ALB/EC2 origins | Direct integration | Reverse proxy only |
| CloudWatch metrics | Native, built-in | Third-party integration |
| AWS WAF | Native association | Not applicable |
| IAM-based signed URLs | Native (CloudFront signed URLs) | Not equivalent |
| VPC origins | Supported | Not supported |
| ACM certificates | Free, automatic renewal | Free (via Cloudflare) |
If your application is fully AWS-native — S3-hosted assets, API Gateway, ALB origins, WAF rules, CloudWatch dashboards — CloudFront is the lower-complexity option. Introducing Cloudflare adds a second control plane, a second DNS provider (or split DNS configuration), and a second point of failure.
Free Tier and Entry-Level Pricing
| CloudFront | Cloudflare | |
|---|---|---|
| Free tier type | 12-month AWS Free Tier only | Permanent free tier |
| Data transfer (free) | 1 TB/month (12 months) | Unlimited (rate-limited) |
| HTTP/S requests (free) | 10 million/month (12 months) | Unlimited |
| SSL/TLS | Free (via ACM) | Free |
| DDoS protection | Shield Standard (free, always) | Included on all plans |
| WAF | Not included free | Not on free plan (Pro+) |
| Edge compute | CloudFront Functions: 2M invocations/month free | Workers: 100K requests/day free |
| After free tier | Pay-as-you-go (no minimum) | Free plan continues (limited features) |
| Bandwidth cost example (10 TB) | ~$85/month | $0 on Pro plan |
Related Comparisons
Explore other technical comparisons:
Why Work With FactualMinds
FactualMinds is an AWS Select Tier Consulting Partner — a verified AWS designation earned through demonstrated technical expertise and customer success. Our architects have run production workloads for companies from seed-stage startups to enterprises.
- AWS Select Tier Partner — verified by AWS Partner Network
- Architecture-first approach — we evaluate your specific workload before recommending a solution
- No lock-in consulting — we document everything so your team can operate independently
- AWS Marketplace Seller
Frequently Asked Questions
Is Cloudflare cheaper than CloudFront?
For most traffic volumes, Cloudflare is cheaper for data transfer. Cloudflare's Pro plan ($20/month) includes unlimited bandwidth, while CloudFront charges $0.0085–$0.12 per GB depending on the origin region — costs that add up quickly at scale. However, the comparison shifts when you factor in the full stack: Cloudflare's WAF, DDoS protection, and Workers are included in paid plans, while CloudFront requires separate charges for AWS WAF ($5–$10/month base plus $0.60 per million requests evaluated), Shield Standard (free), and Shield Advanced ($3,000/month). Organizations already paying for AWS services often find the total cost difference smaller than it appears.
Does CloudFront have a free tier?
Yes. The AWS Free Tier includes 1 TB of data transfer out, 10 million HTTP/HTTPS requests, and 2 million CloudFront Function invocations per month for the first 12 months. After the free tier, CloudFront does not have a permanent free tier. Cloudflare offers a permanent free tier with unlimited bandwidth (rate-limited), basic DDoS protection, and free SSL — making it the default choice for low-traffic personal or startup projects where cost is the primary driver.
Can I use Cloudflare with AWS?
Yes, Cloudflare can sit in front of AWS origins including EC2, ALB, S3, and API Gateway. This is a common configuration for teams that want Cloudflare WAF, DDoS protection, and Workers while keeping their infrastructure on AWS. The trade-off is that you lose CloudFront-specific integrations — Lambda@Edge, CloudFront Functions, and direct S3 origin access control. You also add a network hop and a second vendor dependency. Some teams use both: Cloudflare as the public-facing CDN and CloudFront internally for S3 origins and CloudFront Functions.
What is Lambda@Edge vs Cloudflare Workers?
Both services execute code at CDN edge nodes, but they differ significantly. Lambda@Edge runs Node.js or Python functions at 13 AWS edge locations (CloudFront Regional Edge Caches) and has cold starts of 100–500 ms on the first invocation. Cloudflare Workers runs JavaScript/WebAssembly at 300+ locations globally with zero cold starts — Workers uses V8 isolates instead of full container-style execution, making startup essentially instantaneous. Workers also has a more generous free tier (100,000 requests/day). Lambda@Edge is the better choice when your edge logic needs AWS SDK access, IAM-based authentication, or tight integration with other AWS services. Workers wins on raw performance, global reach, and developer experience for pure edge compute tasks.
Which CDN is better for performance?
Cloudflare has a larger edge network (300+ PoPs vs CloudFront's ~600 edge locations globally, but Cloudflare's are more densely distributed in emerging markets), zero cold starts on Workers, and consistently scores well in third-party CDN performance benchmarks. CloudFront performs comparably in North America and Western Europe — where AWS has dense edge coverage — but may underperform Cloudflare in Southeast Asia, Latin America, and Africa. For most global applications, the performance difference is under 20 ms at the 95th percentile. If you are already on AWS and need CDN + edge functions, CloudFront is the pragmatic choice. If you are optimizing for raw global performance or developer simplicity, Cloudflare has the edge.
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