Description: Type extension in GraphQL is a feature that allows developers to add new fields to existing types without needing to modify the original type definition. This is particularly useful in environments where multiple teams work on different parts of the same API, as it allows the API to evolve without breaking compatibility with existing clients. Type extension is done using the ‘extend’ keyword, which is used to define new fields or types that complement the existing ones. This functionality not only improves code modularity and maintainability but also facilitates the addition of new features as business needs change. Additionally, it allows developers to create more flexible and scalable solutions, as they can incrementally extend types. In summary, type extension is a powerful tool in GraphQL that promotes the continuous evolution of APIs, enabling developers to adapt to new demands without compromising the stability of existing applications.
