You can now create and model links between different application components (for example: frontend and worker,or frontend and API) when developing microservices-based applications in AWS Elastic Beanstalk. Previously, you had to manually hardcode links between components, and making it difficult to manage and update multi-component applications. Now,you can easily model dynamic links between application components and then the components of your application can be updated as a group, or individually, and using a configuration template and a single command. Links between application components are modeled using the AWS Management Console,CLI, or SDK.
Source: amazon.com