# Cloud PBX
> A PBX phone system hosted in the cloud rather than on-premise hardware

Cloud PBX hosts your business phone system in the cloud, eliminating on-premise hardware.

## What is Cloud PBX?
A Cloud PBX (Private Branch Exchange) is a business phone system hosted by a service provider in the cloud rather than on physical hardware at the customer's premises. It provides call routing, voicemail, auto-attendant, and other PBX features via the internet.

## Cloud PBX vs. on-premise PBX
Unlike traditional [PBX](/voip-glossary/pbx/) systems that require significant upfront investment and ongoing maintenance, Cloud PBX operates on a subscription model. Scaling is instant — adding new users requires no new hardware.

## White-label Cloud PBX solutions
Service providers can offer branded Cloud PBX services using platforms like [Acrobits Cloud Softphone](/cloud-softphone/), which provides the softphone client that connects subscribers to the cloud-hosted PBX infrastructure.

## Related Terms
- [PBX](/voip-glossary/pbx/)
- [IP PBX](/voip-glossary/ip-pbx/)
- [Unified Communications](/voip-glossary/unified-communications/)