"SFP" stands for "Small Form-Factor Pluggable." Another commonly used term for SFP is "Mini-GBIC," which stands for "Mini Gigabit Interface Converter." Both terms refer to the same type of hot-pluggable optical transceiver module used for transmitting and receiving data in networking and telecommunications applications. SFPs are widely used in network switches, routers, and other networking equipment to provide flexibility and modularity in configuring and expanding networks.