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What is Minimal API in ASP.NET Core?

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Minimal APIs in ASP.NET Core provide a lightweight approach for building HTTP APIs with minimal configuration, fewer files, and less boilerplate code compared with traditional controller-based Web APIs. Developers can define endpoints directly in the application startup code or through organized endpoint modules while still using ASP.NET Core features such as dependency injection, authentication, authorization, middleware, OpenAPI, and validation.

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Minimal APIs provide a lightweight approach to building HTTP APIs with minimal configuration and boilerplate code. Instead of creating controllers, developers define endpoints directly within the application's startup configuration. Minimal APIs are particularly suitable for microservices, lightweight APIs, serverless applications and internal services where simplicity and performance are priorities. They support dependency injection, authentication, authorization, validation and OpenAPI documentation.

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