AWS CloudFront Functions vs Fastly Compute@Edge

Developers should use AWS CloudFront Functions when they need to perform lightweight, latency-sensitive transformations on HTTP traffic at the edge, such as A/B testing, request routing, or security validations, without provisioning servers meets developers should learn fastly compute@edge when building applications that require ultra-low latency, such as real-time apis, dynamic content delivery, or security features like bot mitigation, as it processes requests closer to users. Here's our take.

AWS CloudFront Functions

Nice Pick

Developers should use AWS CloudFront Functions when they need to perform lightweight, latency-sensitive transformations on HTTP traffic at the edge, such as A/B testing, request routing, or security validations, without provisioning servers

Pros

• It's ideal for use cases like customizing cache keys, modifying headers for CORS, or implementing simple authentication checks, as it offers faster execution and lower cost compared to AWS Lambda@Edge for simple tasks
• Related to: aws-cloudfront, aws-lambda-edge

Cons

• Specific tradeoffs depend on your use case

Fastly Compute@Edge

Developers should learn Fastly Compute@Edge when building applications that require ultra-low latency, such as real-time APIs, dynamic content delivery, or security features like bot mitigation, as it processes requests closer to users

Pros

• It's particularly useful for use cases like A/B testing, personalization, and caching logic at the edge, where traditional server-based architectures might introduce delays
• Related to: javascript, rust

Cons

• Specific tradeoffs depend on your use case

The Verdict

Use AWS CloudFront Functions if: You want it's ideal for use cases like customizing cache keys, modifying headers for cors, or implementing simple authentication checks, as it offers faster execution and lower cost compared to aws lambda@edge for simple tasks and can live with specific tradeoffs depend on your use case.

Use Fastly Compute@Edge if: You prioritize it's particularly useful for use cases like a/b testing, personalization, and caching logic at the edge, where traditional server-based architectures might introduce delays over what AWS CloudFront Functions offers.

The Bottom Line

AWS CloudFront Functions wins

Developers should use AWS CloudFront Functions when they need to perform lightweight, latency-sensitive transformations on HTTP traffic at the edge, such as A/B testing, request routing, or security validations, without provisioning servers