TCP/IP is an acronym for Transmission Control Protocol/Internet Protocol, which is practically the reason why the Internet works. These protocols let computers communicate with one another over the Web.
Transmission Control Protocol (TCP) takes enormous amounts of data, compiles them into network packets (i.e., the units of data transmitted over the Internet), and sends them to another computer’s TCP. Think of TCP as the Internet’s “delivery man,” and the “package” he delivers is the data in the form of packets.
Internet Protocol (IP), on the other hand, is the delivery man’s Global Positioning System (GPS). It ensures that the right locations (i.e., computers or devices) receive the network packets.
Because of TCP/IP, people from Europe can check what’s happening on the other side of the world, and vice versa.