A/B Testing on AWS CloudFront with Lambda@Edge

Working on the new BuildIt@Wipro Digital website we wanted the ability to run A/B testing. The website is distributed by AWS CloudFront, so the solution was to use Lambda@Edge. It allows running Lambda functions at Edge Locations of the CloudFront CDN. It means you may add “intelligence” in the CDN, without having to forward the request to a backend and losing benefits of content caching and geographical proximity with the client.