Modernizing your MERN Stack with GraphQL and GraphOS: A Step-by-Step Guide` The article discusses the benefits of using GraphQL in a MERN stack application or microservice, including simplifying routes and improving developer experience. It provides a step-by-step guide on how to upgrade a project to speak GraphQL using Apollo Server and Apollo Client. The guide covers installing necessary packages, defining a schema, writing resolvers, exposing a GraphQL route, and upgrading the client project. By following this guide, developers can improve their project's performance, scalability, and maintainability, while also reducing code duplication and improving developer onboarding. Additionally, the article mentions the benefits of using GraphOS for schema checks or routing requests across multiple GraphQL services.