# Management

The intended audience for these reference pages is .NET developers. It is assumed the reader already knows the basics of Umbraco and knows .NET & C#.

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Since the release of Umbraco 14, the documentation for Models and Services has been removed from the documentation.
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## [Models (external)](https://apidocs.umbraco.com/v17/csharp/api/Umbraco.Cms.Core.Models.html)

Find references for the models in the public API. The models include Content, ContentType, Language, Media, and Template classes.

## [Services (external)](https://apidocs.umbraco.com/v17/csharp/api/Umbraco.Cms.Core.Services.html)

Find references for the services available for performing Create, Read, Update, and Delete (CRUD) operations for the models.

### [Learn how to use the Umbraco Services](/umbraco-cms/reference/management/using-services.md)

Find a handful of resources for using some of the services available with Umbraco CMS.


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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

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