Voice over Internet Protocol (VoIP) relies on Packet Switching technology for communication. This method breaks down voice signals into smaller packets, which are then transmitted over the internet. Unlike traditional phone systems that use circuit-switching, VoIP allows for more efficient use of bandwidth by sending data only when needed, facilitating real-time communication. Additionally, VoIP encompasses features like video calls, conference calling, and messaging, making it a versatile solution for both personal and business communications. Its reliance on internet connectivity also reduces costs significantly compared to traditional telephony.