Quantum computing refers to a new computational paradigm that leverages quantum mechanics principles to process information. Unlike classical computing, which relies on bits to represent data as either 0s or 1s, quantum computers use qubits, capable of existing in multiple states simultaneously. This property enables quantum computers to perform complex calculations at unprecedented speeds, potentially solving problems beyond the capabilities of classical computers. Quantum computing has significant implications for fields like cryptography, optimization, and drug discovery, representing a paradigm shift in computational technology.