Internet connections link devices to the web, enabling functions like streaming, gaming, and business activities. Different types include dial-up (a slow, phone-line-based option), DSL (faster with phone line use), cable internet (TV cable-based), fiber-optic (fastest, using light signals), satellite (for remote areas), Wi-Fi (wireless home and office connectivity), and mobile broadband (via 4G/5G cellular networks). Fiber is best for high-speed needs.