Released in 2014 by Amazon Web Services, AWS Lambda is a Serverless computing platform that makes it easy for developers to build applications using their own code. Lambda is a fully managed service and no administration is needed. Lambda is ideal for event driven architectures and they can be executed on demand or based on configured triggers from events.
With Lambda you experience a FaaS (Function as a Service) platform where you just write the code. You pay only for the compute time you consume.