Do I need Cloudflare if my site is already on AWS?

Not necessarily.

If your site is already on AWS, whether you “need” Cloudflare depends on what you want Cloudflare to do for you.

You may not need Cloudflare if AWS already covers your needs

AWS can already provide:

• CDN/caching: CloudFront
• DNS: Route 53
• WAF/DDoS protections: AWS WAF + Shield
• TLS/SSL: ACM
• Load balancing: ALB/NLB
• Edge compute: Lambda@Edge / CloudFront Functions

If you’re happy with AWS’s setup and it meets your performance, security, and cost goals, Cloudflare is optional.

Reasons people still add Cloudflare on top of AWS

Cloudflare can be useful if you want:

• Simpler setup/management for CDN, DNS, WAF, bot protection
• Strong DDoS protection and global edge network
• Performance features like caching, image optimization, HTTP/3, early hints
• Security features like rate limiting, managed rules, bot mitigation
• Convenience: one dashboard for multiple edge/security functions
• Zero Trust / Access for internal apps and remote access

Reasons not to add it

You might skip Cloudflare if:

• You already use CloudFront + WAF + Route 53 and it works well
• You want to minimize complexity
• You’re concerned about another proxy layer in front of AWS
• You want to avoid double CDN/proxy troubleshooting
• You’re trying to keep traffic, logging, and security controls fully within AWS

Common pattern

A lot of teams use either:

• AWS-native stack: Route 53 + CloudFront + WAF + ALB/EC2/ECS/Lambda

or:

• Cloudflare in front of AWS: Cloudflare DNS/proxy/WAF/CDN -> AWS origin

Both are valid. The best choice depends on your priorities.

Rule of thumb

• Choose AWS-only if you want a tight, native cloud stack and already have the services you need.
• Choose Cloudflare if you want easier edge/security management, better bot/DDoS tooling, or a simpler global front door.

If you tell me what your site is running on in AWS (S3, EC2, ALB, ECS, Lambda, etc.) and what you want to optimize for (cost, security, speed, simplicity), I can give you a more specific recommendation.