> For the complete documentation index, see [llms.txt](https://docs.zenml.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zenml.io/pro/core-concepts/hierarchy.md).

# Hierarchy

In ZenML Pro, there is a slightly different entity hierarchy as compared to the open-source ZenML\
framework. This document walks you through the key differences and new concepts that are only available for Pro users.

![Image showing the entity hierarchy in ZenML Pro](/files/KESEKxf3fHmN144fJmHz)

{% hint style="info" %}
s**Note**: Workspaces were previously called "Tenants" in earlier versions of ZenML Pro. We've updated the terminology to better reflect their role in organizing MLOps resources.
{% endhint %}

The image above shows the hierarchy of concepts in ZenML Pro.

* At the top level is your [**Organization**](/pro/core-concepts/organization.md). An organization is a collection of users, teams, and workspaces.
* Each [**Workspace**](/pro/core-concepts/workspaces.md) (formerly `tenant`) is an isolated deployment of a ZenML server (with some pro features). It contains multiple projects and their resources.
* Each [**Project**](/pro/core-concepts/projects.md) is a logical subdivision within a workspace that provides isolation for MLOps resources like pipelines, artifacts, and models. Projects have their own roles and access controls.
* [**Teams**](/pro/core-concepts/teams.md) are groups of users within an organization. They help in organizing users and managing access to resources at organization, workspace, and project levels.
* **Users** are single individual accounts on a ZenML Pro instance.
* [**Roles**](/pro/access-management/roles.md) exist at organization, workspace, and project levels to control what actions users can perform.

More details about each of these concepts are available in their linked pages below:

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td><strong>Organizations</strong></td><td>Learn about managing organizations in ZenML Pro.</td><td><a href="/pages/D6ibVLHAd4HlNMwV5H4z">/pages/D6ibVLHAd4HlNMwV5H4z</a></td><td><a href="/files/8Hf3F5169p9lFamgkUcu">/files/8Hf3F5169p9lFamgkUcu</a></td></tr><tr><td><strong>Workspaces</strong></td><td>Understand how to work with workspaces in ZenML Pro.</td><td><a href="/pages/J3d65KYDKudNpt4IXtdg">/pages/J3d65KYDKudNpt4IXtdg</a></td><td><a href="/files/9QMXgG1V4gSgMt5fxcaA">/files/9QMXgG1V4gSgMt5fxcaA</a></td></tr><tr><td><strong>Projects</strong></td><td>Learn about managing projects and their resources.</td><td><a href="/pages/zr3Za7cF7HKx0Vj5iMoS">/pages/zr3Za7cF7HKx0Vj5iMoS</a></td><td><a href="/files/95S100CyuICyiWsXDYcN">/files/95S100CyuICyiWsXDYcN</a></td></tr><tr><td><strong>Teams</strong></td><td>Explore team management in ZenML Pro.</td><td><a href="/pages/8uz2ocz1oApQ4F9Lutac">/pages/8uz2ocz1oApQ4F9Lutac</a></td><td><a href="/files/A51zwIWUDh7q2uHkbje8">/files/A51zwIWUDh7q2uHkbje8</a></td></tr><tr><td><strong>Roles &#x26; Permissions</strong></td><td>Learn about role-based access control in ZenML Pro.</td><td><a href="/pages/7DizWfU9fJ8MVlowvNlT">/pages/7DizWfU9fJ8MVlowvNlT</a></td><td><a href="/files/fjP8J3kZVWzpXV0hfjwx">/files/fjP8J3kZVWzpXV0hfjwx</a></td></tr></tbody></table>

<figure><img src="https://static.scarf.sh/a.png?x-pxid=f0b4f458-0a54-4fcd-aa95-d5ee424815bc" alt="ZenML Scarf"><figcaption></figcaption></figure>


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