Best cloud phone system of 2020 buy a business PBX system in the cloud The best cloud phone systems provide an easy to use and manage business PBX (Private Branch Exchange) system in the cloud.Best cloud phone systems1. RingCentral Office2. Ooma Office3. Aircall4. Dialpad5. 8x8 All-in-One Communications6. Grasshopper7. GoToConnect8. Avaya OneCloudCloud phone systems are now increasingly replacing old hardware due to their cost-effectiveness. As cloud-based phone systems run through software and use VoIP for calls and communications, they can offer much more versatile performance while including a rich range of features as standard, such as analytics and integrations. Better still, pricing works out as much more efficient as you are paying for what you use, rather than having to invest in expensive on-premises hardware. This means that even small businesses can now access full-featured VoIP services for the office and even the home, which include features previously only enterprise co