Query on Azure virtual WAN setup

Hi All,

I am setting up Virtual WAN connection for the first time - read through multiple articles and understood the purpose of it however still unable to get the exact purpose for "VPN site" connection under connections tab. Some basis understanding is missing from whatever i read.

I already have a site-to-site vpn connection from on-premises aws to Azure using "Virtual Network gateway".

• I would like know what is purpose of "VPN Site" Connections?
• I already have S2S connection from on-premises aws to Azure, will i be able to link this S2S connection in Azure "VPN Sitex"?
• Under Connectivity -> VPN Sites -> links tab -> IP Address/FQDN --> (here which IP Address should i enter)?

Below is the link i followed however still i am unable to get what exactly i have to do for "VPN Site" setup..

https://docs.microsoft.com/en-us/azure/virtual-wan/virtual-wan-site-to-site-portal

Please help!