What is the global network that connects millions of devices referred to as?

The global network that connects millions of devices is known as the Internet. It serves as a vast communication system that allows different devices, such as computers, smartphones, and servers, to connect and exchange information regardless of their geographic location. The Internet facilitates a wide array of services, including web browsing, email communication, and online gaming, making it the backbone of modern communication and information sharing.

In contrast, an intranet is a private network used within an organization to share information and resources among its members. An extranet extends this concept by allowing limited access to individuals outside the organization, but it is not a global network like the Internet. A VPN, or Virtual Private Network, is a service that creates a secure connection over the Internet, allowing users to access networks safely and is not itself a network connecting millions of devices. Thus, the term that encompasses the expansive and interconnected nature of global device communication is the Internet.