# 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/introduction/before-you-start/networking)
* [Permissions in Azure and optionally in Microsoft Entra ID](https://docs.parallels.com/landing/ras-azure-marketplace-deployment-guide/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/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/introduction/before-you-start/azure-virtual-machine-quotas)

The next chapters cover each requirement in greater detail.