Getting Started with AWS Lambda

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AWS Lambda allows you to run code without provisioning or managing servers. You pay only for the compute time you consume - there is no charge when your code is not running. With Lambda, you can run code for virtually any type of application or backend service - all with zero administration. Just upload your code and Lambda takes care of everything required to run and scale your code with high availability.

Some key things to know about AWS Lambda:

- Serverless execution environment - Lambda runs your code on its own servers and manages the underlying computer infrastructure including server provisioning, patching, and maintenance. Your code is triggered by events and automatically scales up or down based on request traffic.

- Triggers from various sources - Lambda functions can be triggered on-demand or by changes to data in AWS services like S3, DynamoDB, Kinesis or through HTTP requests using API Gateway. This makes it easy to integrate Lambda functions across your applications and backend services. 

- Pay only for compute time used - You are charged based on the number of requests to your function and the duration each request executes. There is no charge when your code isn't running. This makes AWS Lambda a very cost effective solution for many use cases.

- Easy to get started - Simply upload your code as a zip file via the AWS console or use AWS CLI/SDKs. Code can be written in JavaScript, Python, Java, C#, Go, and more. Testing and debugging functions is straightforward using the console.

- Scales automatically - Lambda automatically provisions and scales your functions to handle millions of requests per day without manual intervention. It can scale from a few requests per day to thousands per second based on traffic.

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