A VoIP Service Provider is a company that offers Voice over Internet Protocol (VoIP) services, allowing users to make phone calls using the internet instead of traditional telephone lines. This technology converts voice signals into digital data, enabling communication over the internet. VoIP services can be used for both personal and business purposes, often providing features like video calls, voicemail, and call forwarding. Many VoIP Service Providers offer competitive pricing and flexible plans, making it an attractive option for those looking to save on phone bills. Popular providers include Skype, Vonage, and RingCentral, each offering various features tailored to different user needs.