What is Voice Over Internet Protocol (VOIP)?

Voice Over Internet Protocol (VOIP), sometimes known as IP telephony, is a technology that is used to carry out voice communication, video calling, and video conferencing over the internet. VOIP works by sending and receiving voice and video calling data between two or more IP addresses. VOIP was made famous by Skype, Zoom, and several other large multinational enterprises over the last 30 years. VOIP has changed the way many businesses communicate because it is often free or very cheap to use compared to long-distance phone calls. VOIP began as a computer-to-computer service but recently expanded to mobile-to-mobile device calling.