Which type of connections use a virtual private gateway in an Amazon VPC?

A virtual private gateway in an Amazon VPC is designed to facilitate secure connections to an on-premises network or to other networks from within a VPC. The two primary connection types that utilize a virtual private gateway are AWS Direct Connect and VPN (Virtual Private Network) connections.

AWS Direct Connect provides a dedicated network connection from your premises to AWS. This connection allows you to bypass the internet, providing more reliability, faster speeds, and lower data transfer costs. When you set up a Direct Connect, it connects to the virtual private gateway, allowing you to access your VPC resources securely.

Similarly, a VPN connection uses the virtual private gateway to establish an encrypted tunnel between your on-premises network and your VPC over the public Internet. This ensures that data is securely transmitted between the two locations, utilizing the secure gateway as a point of termination for the VPN connection.

Both Direct Connect and VPN rely on the virtual private gateway to manage and secure the data flow in and out of the VPC, making this the correct answer. Other connection types listed do not utilize a virtual private gateway, as they serve different purposes or connect VPCs internally rather than to external networks.