AWS Lambda@Edge
AWS Lambda@Edge is a serverless computing service that allows you to run Lambda functions at AWS Edge locations, which are part of the CloudFront content delivery network (CDN). It enables developers to execute code closer to end-users, reducing latency by processing requests and responses at the edge of the network. This service is used for tasks like customizing content, performing authentication, and optimizing web performance without managing servers.
Developers should use AWS Lambda@Edge when they need to execute lightweight, low-latency functions at the edge for real-time processing, such as A/B testing, request/response manipulation, or security checks in web applications. It's ideal for scenarios where reducing latency is critical, like dynamic content personalization or bot mitigation, as it leverages CloudFront's global infrastructure to run code closer to users.