VoIP technology, or Voice over Internet Protocol, allows users to make voice calls using the internet instead of traditional phone lines. It converts sound into digital data, which is then transmitted over the internet. This technology enables features like video calls, voicemail, and conference calls, often at a lower cost than conventional phone services. VoIP can be used on various devices, including computers, smartphones, and dedicated VoIP phones. Popular VoIP services include Skype, Zoom, and WhatsApp, which have made communication more accessible and flexible for both personal and business use.