This topic describes the pre-requisites and the hardware requirements for Azure AD Connect.
Before you install Azure AD Connect, there are a few things that you need, related to:
- Azure AD
- On-premises Active Directory
- Azure AD Connect server (hardware and software requirements)
- SQL Server used by Azure AD connect
- Accounts & connectivity
- Components prerequisites
- SSL certificates and more
All details are in the following Microsoft docs article: https://docs.microsoft.com/en-us/azure/active-directory/connect/active-directory-aadconnect-prerequisites