Managing functions in CloudFront Functions - Amazon CloudFront
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/managing-functions.html
WEBWith CloudFront Functions, you can write lightweight functions in JavaScript for high-scale, latency-sensitive CDN customizations. After you write the function code , the following topics can help you create the function in CloudFront Functions, test it, update it, publish it, and associate it with a CloudFront distribution.
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