Which AWS service lets organizations define and provision infrastructure using code (infrastructure as code)?

AWS CloudFormation allows you to define and provision AWS infrastructure deployments using a declarative template language (YAML or JSON). This enables infrastructure as code, where you manage your cloud resources like application code, facilitating version control, reusability, and consistent deployments. Amazon EKS is a managed Kubernetes service for running containerized applications, not for defining infrastructure as code. AWS Outposts extends AWS infrastructure and services to on-premises locations, but it's not an infrastructure as code tool itself. AWS CodePipeline is a continuous delivery service for automating release pipelines, focusing on the software delivery process rather than infrastructure provisioning through code.