Which AWS service or feature is a browser-based, pre-authenticated service that can be launched directly from the AWS Management Console?

Explanations:

AWS API is not a browser-based service but rather a set of APIs that allow developers to interact with AWS services programmatically. It requires authentication through AWS credentials and is not launched directly from the AWS Management Console.

AWS Lightsail is a simplified cloud service for deploying and managing virtual private servers. While it has a web interface, it is not specifically designed as a browser-based, pre-authenticated service that can be launched directly from the console.

AWS Cloud9 is a cloud-based integrated development environment (IDE) that allows users to write, run, and debug code. Although it is accessed through a web browser, it does not fit the definition of a pre-authenticated service launched directly from the console without additional setup.

AWS CloudShell is a browser-based shell that provides a pre-authenticated command-line interface for managing AWS resources. It is directly accessible from the AWS Management Console, making it easy for users to run AWS CLI commands without needing to configure additional authentication.