Description: An input type in GraphQL is a structured definition that specifies how data should be organized and validated when sent to the server during a mutation. Unlike object types, which describe the shape of the data returned, input types focus on the data being sent by the client. These types allow developers to clearly define which fields are required, which are optional, and what types of data are expected, helping to prevent errors and ensure data integrity. Input types are particularly useful in applications where data creation or update operations are performed, as they enable more precise communication between the client and server. By defining an input type, a clear structure can be established that the client must adhere to, facilitating validation and error handling. In summary, input types are a fundamental tool in GraphQL that enhances the clarity and robustness of interactions between clients and servers.