Overall, the term “cloud” refers to data that is accessible from any internet access point. For instance, cloud phones allow you to access voicemail from any internet-connected device, not just the one phone with the number assigned to it through a landline.
Meanwhile, VoIP phone services usually include hardware – a physical phone – to access the full feature set. Cloud systems may be able to make calls over cell phones, tablets, computers, or any other device without needing a desk phone at all. Most VoIP providers today offer calling through internet connected devices.
Finally, businesses usually use PBX phone systems – but these, too, are now integrated into VoIP and cloud systems. PBX stands for Private Branch Exchange which means that it is a private phone network. If you’re in an office and can pick up a phone and just dial a 3-digit extension without having to dial a full number, that’s because you’re on a PBX. PBX systems enable internal calling and are combined with VoIP for external calling.
Increasingly, companies are relying on cloud features to be integrated into their PBX phone systems. If you want to monitor how phone calls are being handled or record calls for training purposes, then you’re using cloud features along with your PBX.
These features are likely all bundled into one system from your telecom provider. This provides access to all the features you need while still getting to use simple hardware.