For decades, business phone systems were defined by the PBX (private branch exchange). These expensive and complicated phone systems provide automated greetings and touchtone menus, but are priced beyond the reach of many small and medium businesses and are costly to maintain.
A hosted PBX is basically a PBX that runs on computer servers in the cloud. By eliminating the need for complex hardware such as trucks and switches onsite, hosted PBX delivers all the power of a traditional PBX at a much lower overall cost. And, yes, a hosted PBX is the same as a cloud PBX, a virtual PBX and cloud VoIP (which stands for Voice over Internet Protocol).