GraphQL Federation Architecture: An Open/Closed Principle and Project-Based SuperGraphs approach is being discussed, where a modular, reusable API architecture is leveraged to support development teams working on multiple similar projects. This approach utilizes the Open/Closed Principle, which states that software entities should be open for extension but closed for modification. In the context of API development, GraphQL Federation supports this principle and offers benefits such as independent extensibility and minimal risk when it comes to breaking changes. Traditional REST APIs struggle with OCP, requiring constant modifications and versioning. By using GraphQL Federation, developers can build modular, scalable API architectures that evolve without modifying existing services, making it ideal for project-based development like in game development where multiple teams work on different projects.