Interactive Voice Response (IVR) is a technology that allows computer systems to interact with humans through the use of voice and DTMF (Dual-Tone Multi-Frequency) tone input via a keypad. It enables automated handling of incoming calls, guiding callers through a series of pre-recorded voice prompts or menu options to route their calls to the appropriate destination or provide information without the need for human intervention. IVR systems are widely used in various industries for tasks such as customer service, call routing, surveys, and more.