AWS Lambda is a serverless computing service provided by Amazon Web Services (AWS). It allows developers to run their code without provisioning or managing servers. With AWS Lambda, developers can write functions in different programming languages and deploy them to the cloud. The functions are triggered by specific events, such as changes to data in an Amazon S3 bucket or updates to a DynamoDB table.

AWS Lambda offers a pay-as-you-go model, where users only pay for the compute time consumed by their functions. This makes it a cost-effective solution for running code in response to events or on a scheduled basis. AWS Lambda automatically scales the execution of functions based on incoming requests, ensuring that the code runs reliably and efficiently, even during high traffic periods.

Developers can use AWS Lambda for a wide range of use cases, including data processing, real-time file processing, web application backends, and microservices. AWS Lambda integrates seamlessly with other AWS services, such as Amazon S3, DynamoDB, and API Gateway, enabling developers to build robust and scalable applications. It also provides monitoring and logging capabilities, allowing users to track the performance and troubleshoot their functions.

By leveraging AWS Lambda, developers can focus on writing code and delivering value, without worrying about server management and infrastructure provisioning. AWS Lambda abstracts away the underlying infrastructure, providing a flexible and efficient platform for running serverless applications.