## Next steps * For information on using a persistent database, see: * * * * * [ASP.NET Core Web API help pages using Swagger](xref:tutorials/web-api-help-pages-using-swagger) * [Routing to controller actions](xref:mvc/controllers/routing) * [Build web APIs with ASP.NET Core](xref:web-api/index) * [Controller action return types](xref:web-api/action-return-types) * [View or download sample code](https://github.com/aspnet/Docs/tree/master/aspnetcore/tutorials/first-web-api/samples). See [how to download](xref:index#how-to-download-a-sample).