AWS Elastic Beanstalk is the correct answer as it is a fully managed service that simplifies the deployment, running, and scaling of applications in the AWS Cloud. It automatically handles the details such as capacity provisioning, load balancing, and auto-scaling, allowing developers to focus on their application code rather than infrastructure management. The other options, while useful in different contexts, do not provide the same level of abstraction and ease of deployment as Elastic Beanstalk. AWS CloudFormation is for infrastructure as code, AWS CodeDeploy is for automated deployment of applications, and AWS CodeCommit is a source control service, none of which directly address the requirement of quick application upload without provisioning resources.