It a serverless computing. It a next generation cloud computing that would replace EC2 instances in future.
Free-tier is available for Lamda in limted fashion. Charges for using Lambda depends on:
- Requests (to execute code)
- Duration (the length of time it takes to execute the code)
- Accessing data from other AWS services/resources
Currently it only supports languages:
To know more about Lamda pricing, you can visit the following url:
I hope this gives you clear understanding of AWS Lambda. If you have any doubts or queries, please feel free to comment below.