Pay as you use. No charge when code is not running.
Event-driven – Event can be an AWS service or a custom service.
You create Lambda function with your application code.
Code is stored in S3.
Code in encrypted at Rest.
You specify the memory to be allocated for a function. Minimum 128MB, Maximum 3008MB. Memory is allocated in 64MB increments. CPU, Disk I/O are automatically allocated by AWS based on Memory requirements.
Lambda functions are stateless. They can run on any available underlying infrastructure.
Supports below languages:
Java
Python
Ruby
Node.js
Go
.NET
Timeout can be set to any value between 1 second and 900 seconds. Default value is 3 seconds.
Lambda function is terminated at timeout.
Functions can be invoked concurrently – Default limit is 1000.
