A company wants a managed AWS service that can build container images from source code and deploy the containerized web application automatically. Which service should they use?

AWS App Runner is the correct choice because it is a fully managed service designed to build container images directly from source code repositories (like GitHub) or a container image registry, and then automatically deploy and scale the containerized web application. It simplifies the entire process, handling infrastructure provisioning, load balancing, SSL, and auto-scaling. Amazon ECS is a container orchestration service that requires more manual configuration for building and deploying compared to App Runner's fully managed approach. AWS Elastic Beanstalk can deploy web applications, but it's not specifically designed for building container images from source code in the same streamlined, fully managed way as App Runner. Amazon EC2 provides virtual servers and would require significant manual effort to set up a container build and deployment pipeline.