When configuring Azure Arc, which connectivity method is specified for onboarding a Windows server?

When onboarding a Windows server to Azure Arc, using a public endpoint is the correct connectivity method. This approach allows the Azure Arc service to communicate with the server over the internet, facilitating the management and governance of those resources directly from the Azure portal without requiring specialized networking configurations.

Public endpoints enable Azure Arc to extend Azure management capabilities to servers that might not be in a local network connected to Azure, thereby increasing accessibility and ease of deployment for organizations that may not have private networking arrangements in place. This is particularly useful for servers located in remote locations or in environments where traditional VPNs or private network setups are not feasible.

The other methods listed, while useful in different contexts, are not specifically meant for onboarding Windows servers to Azure Arc. For instance, private endpoints are designed for secure, private connections between Azure services and resources within a private network, which does not directly apply to the onboarding of external servers. A virtual network gateway facilitates VPN connections or Azure ExpressRoute but does not directly relate to the initial onboarding process for Azure Arc. Site-to-site connections typically refer to linking entire networks rather than individual server onboarding, making public endpoints the practical choice for this scenario.