AWS CloudFront vs Cloudflare: CDN Comparison for 2025

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**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.

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## Freshness Check (June 2026)

Use this page as a decision framework, then validate the latest pricing, quotas, and region-level feature parity in AWS documentation before final sign-off.

This page was refreshed against official AWS announcements and service documentation published in the last 12 months. Confirm region support, quotas, and pricing before final architecture sign-off.

- [AWS What's New](https://aws.amazon.com/about-aws/whats-new/)

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/)

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