Which AWS service is primarily designed for deploying and managing applications?

The choice of AWS Elastic Beanstalk is correct because it is specifically designed to simplify the process of deploying and managing applications in the cloud. Elastic Beanstalk provides a platform as a service (PaaS) that automatically handles the deployment, from capacity provisioning, load balancing, and auto-scaling to application health monitoring.

When you use Elastic Beanstalk, you can simply upload your application code, and the service takes care of the rest, which allows developers to focus more on writing code rather than managing infrastructure. It supports various programming languages and frameworks, including Java, .NET, Node.js, PHP, Python, Ruby, and Go, making it versatile for different application deployments.

In contrast, Amazon EC2 is more about providing scalable compute capacity in the cloud and requires more management effort for application deployment and server configuration. AWS Lambda enables serverless computing, allowing you to run code in response to events without provisioning or managing servers, which is a different approach to application management. Amazon S3, on the other hand, is a storage service designed to store and retrieve any amount of data, rather than for application deployment or management, thus not serving the primary purpose outlined in the question.