A company wants to ensure that its internal servers are not directly accessible from the internet but can still initiate connections to external services. Which technology would best fit this requirement?

In this scenario, the best technology to ensure that internal servers are not directly accessible from the internet while allowing them to initiate connections to external services is a Proxy Server. A Proxy Server acts as an intermediary, forwarding requests from internal clients to external services while masking the internal server's identity. It provides security and control over outgoing connections. Firewalls and VPNs are primarily used for different purposes, and NAT doesn't provide the necessary level of control.