Amazon Rekognition is a cloud-based Software as a service computer vision platform that provides fast and accurate face search, allowing developers to identify a person in a photo or video using a private repository of face images.
CloudFront is a content delivery network (CDN) offered by Amazon Web Services. Content delivery networks provide a globally-distributed network of proxy servers which cache content, such as web videos or other bulky media, more locally to consumers, thus improving access speed for downloading the content.
AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services. It lets clients run code without provisioning or managing servers.