AWS Lambda is a serverless computing service that allows for scalable backend solutions without the hassle of server management. By using lightweight virtual machines called microVMs managed by Firecracker, AWS Lambda can efficiently handle scalability and performance. The system includes important components like the invoke service for routing requests, the assignment service for tracking workers, and the use of journal logs for failover and fault tolerance. Techniques like warm starts and lazy-loading of container images help reduce latency.
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