---
title: "Sitecore ASP.NET Rendering SDK (legacy)"
slug: "sitecore-asp-net-rendering-sdk--legacy-"
abstract: "Overview of the Sitecore ASP.NET Rendering SDK for building rendering hosts."
---
# Sitecore ASP.NET Rendering SDK (legacy)

> [!important]
> If you integrated your ASP.NET Core app before September 2024, it's using the legacy ASP.NET Core Rendering SDK, version 22 or earlier. This SDK is no longer receiving updates, so we recommend that you [upgrade to the latest version of the new ASP.NET Core SDK](https://doc.sitecore.com/xmc/en/developers/asp-net/latest/asp-net-core-sdk/upgrade-from-v22.html).

The Sitecore ASP.NET Rendering SDK offers a starting point for the rendering of Sitecore content.

- [Headless development with the ASP.NET Rendering SDK](https://doc.sitecore.com/xp/en/developers/hd/23/sitecore-headless-development/headless-development-with-the-asp-net-rendering-sdk.html "Headless development with the ASP.NET Rendering SDK")
- [Sitecore Layout Service](https://doc.sitecore.com/xp/en/developers/hd/23/sitecore-headless-development/sitecore-layout-service.html "Sitecore Layout Service")
- [ASP.NET Core Rendering Engine](https://doc.sitecore.com/xp/en/developers/hd/23/sitecore-headless-development/asp-net-core-rendering-engine.html "ASP.NET Core Rendering Engine")
- [Sitecore ASP.NET Rendering SDK API (legacy)](https://doc.sitecore.com/xp/en/developers/hd/23/sitecore-headless-development/sitecore-asp-net-rendering-sdk-api--legacy-.html "Sitecore ASP.NET Rendering SDK API (legacy)")