ASP.NET Core Guia Best Authentication for ASP.NET Core (2026)
Compare the best authentication solutions for ASP.NET Core. We review Identity, Azure AD, Auth0, and more with .NET integration patterns.
ASP.NET Core Identity provides built-in authentication with extensive customization. We've evaluated authentication providers that integrate well with .NET's security middleware.
Por Que É Importante
ASP.NET Core's authentication middleware handles cookies, JWTs, and OAuth elegantly. The right provider choice affects development speed and enterprise integration capabilities.
Considerações Importantes
ASP.NET Core Identity
Built-in user management with EF Core. Full control over user data. Good for custom requirements.
JWT Bearer
AddJwtBearer() validates tokens from any OIDC provider. Standard for APIs.
Azure AD Integration
Microsoft.Identity.Web provides seamless Azure AD/Entra integration. Best for Microsoft shops.
Claims-Based Auth
.NET's claims system works with any provider. Use [Authorize] attributes and policies.
Blazor Auth
Blazor has built-in auth components. Works with Identity, Azure AD, or external providers.
Nossas Recomendações
Auth0
Melhor Geral Excelente Suporte SDK OficialAuth0 has excellent .NET SDKs and documentation. Universal Login, social connections, MFA. 7,500 MAU free. Best third-party option.
dotnet add package Auth0.AspNetCore.Authentication 
Microsoft Entra ID
Melhor Microsoft Excelente Suporte SDK OficialAzure AD (Entra ID) has first-party Microsoft.Identity.Web package. Best for Microsoft ecosystem. Enterprise SSO, B2C for consumers.
dotnet add package Microsoft.Identity.Web 
Keycloak
Melhor Código Aberto Excelente SuporteKeycloak works with standard OIDC middleware. Self-host for free. SAML, LDAP, social login. Enterprise-grade.
AddOpenIdConnect with Keycloak settings 
Okta
Melhor para Empresas Excelente Suporte SDK OficialOkta has official ASP.NET Core SDK. Enterprise workforce identity. 15,000 MAU free. Great for corporate apps.
dotnet add package Okta.AspNetCore Duende IdentityServer
Melhor Auto-hospedado Excelente Suporte SDK OficialDuende IdentityServer (successor to IdentityServer4). Full OAuth2/OIDC server. Commercial license. Maximum control.
dotnet add package Duende.IdentityServer Comparação Rápida
| Serviço | TypeScript | Edge | Plano Gratuito | Tempo de Configuração |
|---|---|---|---|---|
| Auth0 | none | — | 7,500 MAU | 20 min |
| Microsoft Entra ID | none | — | 50,000 MAU (B2C) | 25 min |
| Keycloak | none | — | Unlimited (self-host) | 30 min |
| Okta | none | — | 15,000 MAU | 25 min |
| Duende IdentityServer | none | — | Commercial license | 60 min |
Início Rápido
builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
.AddJwtBearer(options =>
{
options.Authority = builder.Configuration["Auth:Authority"];
options.Audience = builder.Configuration["Auth:Audience"];
options.TokenValidationParameters = new TokenValidationParameters
{
ValidateIssuerSigningKey = true,
ValidateAudience = true,
ValidateLifetime = true
};
});
builder.Services.AddAuthorization();Padrões de Integração Comuns
Auth0 + ASP.NET Core API
Auth0 for authentication, ASP.NET Core for API with JWT validation.
Azure AD + Blazor
Azure AD authentication with Blazor Server or WASM.
Identity + PostgreSQL
ASP.NET Core Identity with PostgreSQL for self-contained auth.