A "carrier" is a person or company that transports goods or people from one place to another. In logistics, carriers can be trucks, ships, airplanes, or trains that move products across various distances. They play a crucial role in supply chains, ensuring that items reach their destinations safely and on time. In telecommunications, a "carrier" refers to a company that provides communication services, such as cellular networks or internet access. These carriers manage the infrastructure needed for transmitting data and voice, allowing users to connect with each other through devices like smartphones and computers.