# Lambda

* AWS Lambda is a compute service that runs your code in response to events and automatically manages the underlying compute resource for you.
*  t can automatically run code in response to modifications to objects in S3 bucket, messages arriving in kinesis stream, or table update in dynamo DB.
*  AWS Lambda lets you 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. 
* Just upload your code and Lambda takes care of everything required to run and scale your code with high availability. 
* ou can set up your code to automatically trigger from other AWS services or call it directly from any web or mobile app. 
* In short lambda is a service to run your code, all you need is to supply the code.
*  Supported programming language is JavaScript.
*  It is designed to provide 99.99% availability

##  Pricing

####  First 1 st million requests is free there after $0.20.

* Duration is calculated from the time your code begins executing until it returns or otherwise terminates, rounded up to nearest 100ms. 
* The price depends upon the amount of memory you allocate to your function. You are charged $0.00001667 for every GB