Benefits of GraphQL vs REST and gRPC
Briefly

GraphQL provides a single endpoint for requests, allowing clients to specify exactly what data they need, which reduces over-fetching and under-fetching issues commonly faced in REST.
While REST uses multiple endpoints for different resources, GraphQL enables developers to structure requests in one query, providing efficiency in data retrieval without excess overhead.
Although GraphQL offers significant advantages in flexibility and precision, it comes with challenges such as a steeper learning curve and complexities in server implementation.
In practical use, GraphQL is favored for public APIs, whereas gRPC is often preferred for internal services due to its structured communication and performance with binary data.
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