All 15 Controllers vs Minimal APIs questions
More in Controllers vs Minimal APIs
What is the fundamental structural difference between controller-based APIs (MVC) and minimal APIs in ASP.NET Core? What is ControllerBase, and why do API controllers typically inherit from it rather than the full Controller class? How do you organize a large number of minimal API endpoints without ending up with an enormous, unwieldy Program.cs file? How does model binding work differently between controllers (using [FromBody], [FromQuery] attributes) and minimal APIs (using parameter inference)? Can a single ASP.NET Core project use both controllers and minimal APIs simultaneously, and what are valid reasons to do so? How do you apply the same authorization, CORS, and rate limiting policies consistently across both controllers and minimal API endpoints in a hybrid application? How does route-to-code discoverability differ between controllers' attribute-based routing and minimal APIs' explicit registration, and what are the trade-offs for large codebases? How do action results like Ok(), NotFound(), and BadRequest() in controllers compare to their minimal API equivalents like Results.Ok() and TypedResults? How does the underlying request execution pipeline differ in performance between controllers and minimal APIs, and what accounts for the difference? How would you decide between controllers and minimal APIs for a new project, weighing team familiarity, project complexity, and long-term maintainability?
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ASP.NET Core › Controllers vs Minimal APIs

What features do controllers provide out of the box that minimal APIs don't have native equivalents for?

Intermediate

Answer

Controllers provide built-in support for action filters/exception filters/result filters (a rich, multi-stage filter pipeline), automatic model validation via [ApiController]'s ModelState checking, convention-based routing, and view rendering (for MVC views/Razor Pages) -- minimal APIs instead use the lighter-weight IEndpointFilter for cross-cutting concerns and require more explicit, manual validation logic, reflecting a deliberate design trade-off favoring simplicity and lower overhead over built-in richness.
// Controllers: automatic model validation via [ApiController]
[ApiController]
public class ProductsController : ControllerBase {
    [HttpPost]
    public IActionResult Create(ProductDto dto) {
        // ModelState.IsValid already checked automatically, 400 returned if invalid
        return Ok(_service.Create(dto));
    }
}

// Minimal API: validation typically requires explicit logic or a library like FluentValidation
Real-world example A team migrating a validation-heavy controller-based API to minimal APIs discovers they need to add explicit validation middleware or a library like MinimalApis.Extensions to replicate the automatic ModelState validation they previously got for free with [ApiController].

Common follow-ups: How does IEndpointFilter provide similar functionality to MVC's filter pipeline?;What third-party libraries fill the validation gap for minimal APIs?

Model Binding & Validation;Filters
All 15 Controllers vs Minimal APIs questions