AWS is a whole class of cloud services offered and administered through a common interface. The common interface through which the services are offered in the AWS web console is reachable at https://console.aws.amazon.com/.

This type of service is charged. However, for the first year, a free tier is available. This a set of services use the minimum amount of resources and can be used for free to both evaluate the services and for the development of applications.

In these sections, we will outline the basics of running code in AWS Lambda without having to provision or manage any servers. We will show how to create a Hello World function in Lambda by using the AWS Lambda console. We will also explain how to manually call up the Lambda function by using sample event data and how to interpret the output parameters. All the operations shown in this tutorial can be performed as part of the free plan at https://aws.amazon.com/free.