---
title: NuGet package families in CMS
slug: cms-12/docs/nuget-package-families-in-cms
docTags: 
createdAt: 2026-08-10T15:56:03.000Z
---

Package families are groups of Optimizely Nuget packages that are related to each other and are released together. They share the same version number and depend strictly on other packages within the same family. For example, the `EPiServer.CMS.AspNetCore.HtmlHelpers` package and the `EPiServer.CMS.Core` package is part of the same family, and they depend (indirectly and directly) on the `EPiServer.Framework` package.

When Optimizely releases a package family version, release notes and bug fixes are documented with the family's name and not the individual packages. This means that the feature or fix you are looking for may be in any package in the family, and you should update them together to get the benefits. Usually, this only requires updating one or a few top-level dependencies, like the `EPiServer.CMS` package and the rest resolve automatically. If you run into issues with dependency conflicts, read more in this article.

:::hint{type="info"}
**Note**
See also: [Resolve NuGet dependency conflicts](docId\:ceBFI99kPxQA8C7WJmT0W).
:::

The following sections show package families as they are named in the release notes and bug list, with a list of the packages that belong to the family:

## EPiServer.CMS.Core

- `EPiServer.CMS.AspNetCore`
- `EPiServer.CMS.AspNetCore.HtmlHelpers`
- `EPiServer.CMS.AspNetCore.Mvc`
- `EPiServer.CMS.AspNetCore.Routing`
- `EPiServer.CMS.AspNetCore.TagHelpers`
- `EPiServer.CMS.AspNetCore.Templating`
- `EPiServer.CMS.Core`
- `EPiServer.Framework`
- `EPiServer.Framework.AspNetCore`
- `EPiServer.Hosting`

## EPiServer.CMS.UI

- `EPiServer.CMS.UI`
- `EPiServer.CMS.UI.Admin`
- `EPiServer.CMS.UI.AspNetIdentity`
- `EPiServer.CMS.UI.Core`
- `EPiServer.CMS.UI.Settings`
- `EPiServer.CMS.UI.Sources`
- `EPiServer.CMS.UI.VisitorGroups`

## EPiServer.Commerce

- `EPiServer.Commerce`
- `EPiServer.Commerce.Core`
- `EPiServer.Commerce.UI`
- `EPiServer.Commerce.UI.Admin`
- `EPiServer.Commerce.UI.CustomerService`
- `EPiServer.Personaliztion.Commerce`
  (This is listed under `EPiServer.Commerce` release but follows a separate major version cadence.)
- `EPiServer.Tracking.Commerce`
  (This is listed under `EPiServer.Commerce` release but follows a separate major version cadence.)

## EPiServer.Find

- `EPiServer.Find`
- `EPiServer.Find.Blocks`
- `EPiServer.Find.Cms`
- `EPiServer.Find.Cms.AttachmentFilter`
- `EPiServer.Find.Framework`
- `EPiServer.Find.Personalization`

:::hint{type="info"}
**Note**
`EPiServer.Find.Commerce` is released and versioned separately.
:::

## EPiServer.ContentDeliveryApi and EPiServer.ContentManagementApi

- `EPiServer.ContentDeliveryApi.Cms`
- `EPiServer.ContentDeliveryApi.Commerce`
- `EPiServer.ContentDeliveryApi.Core`
- `EPiServer.ContentDeliveryApi.Forms`
- `EPiServer.ContentDeliveryApi.Search`
- `EPiServer.ContentDeliveryApi.Search.Commerce`
- `EPiServer.ContentManagementApi`