Voice over Internet Protocol (VoIP) is a technology that allows people to make phone calls using the internet instead of traditional telephone lines. By converting sound into digital data, VoIP enables voice communication to travel over the internet, making it possible to connect with others anywhere in the world. VoIP services can be used on various devices, including computers, smartphones, and dedicated VoIP phones. This technology often offers additional features like video calling, messaging, and conference calls, usually at a lower cost than conventional phone services, making it a popular choice for both personal and business communication.