# Before you start

Since the Parallels RAS environment must be deployed in an existing Azure Subscription and active Active Directory (Entra ID) environment, a few requirements and permissions need to be in place before deploying Parallels RAS through the marketplace. 

These requirements are: 

* [A Virtual Network (VNet) with Subnet ](https://docs.parallels.com/landing/ras-azure-marketplace-deployment-guide/v20/introduction/before-you-start/networking)
* [Permissions in Azure and optionally in Microsoft Entra ID](https://docs.parallels.com/landing/ras-azure-marketplace-deployment-guide/v20/introduction/before-you-start/permissions)
* [A healthy running Active Directory Domain Services (ADDS) or Azure Active Directory Domain Services (AADDS)](https://docs.parallels.com/landing/ras-azure-marketplace-deployment-guide/v20/introduction/before-you-start/active-directory-domain-services)
* [An Azure Subscription with a sufficient Virtual Machine (VM) quota to deploy at least three Virtual Machines](https://docs.parallels.com/landing/ras-azure-marketplace-deployment-guide/v20/introduction/before-you-start/azure-virtual-machine-quotas)

The next chapters cover each requirement in greater detail. 


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

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

```
GET https://docs.parallels.com/landing/ras-azure-marketplace-deployment-guide/v20/introduction/before-you-start.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.