Developers can use Java 8, introduced last year, and any of the usual Java libraries, along with the AWS SDK for Java. AWS provides two libraries for Lambda, aws-lambda-java-core for function handlers ...

Users can activate Lambda SnapStart for new or existing Java-based Lambda functions running on Amazon Corretto 11 via the AWS Lambda API, AWS Management Console, AWS Command Line Interface, and ...

You can see where this is headed. In the future you won't be buying cloud infrastructure from AWS as much as you will functions. Compute was last year. This year it's analytics.

Meanwhile, Microsoft Azure does not have a service to compete with Lambda — but Microsoft is developing one, as analyst Janakiram MSV noted in an article on Cloud Functions in Forbes.