Safety and security
Traditional accounting: All your data could be lost if the devices on which it’s held are lost, stolen, damaged by flood or fire etc. or start to malfunction.
The data could also be hacked by someone who accesses or steals a device, and it’s only as secure as your last security update on the device (assuming you keep your device’s security software, such as anti-virus packages, constantly updated). Transferring files by email or via memory stick also raises security concerns.
Cloud: Your entire office could burn down and the devices of every staff member could be lost or stolen—yet you would still have access to all your data because it’s held safely in the cloud, on multiple servers in multiple locations.
You only need to reach an internet-enabled device to have full control of your data again. Anyone stealing a company device would have to know the secure login for your cloud accounting software to access any of your data, as nothing is held on the device itself.
As for security, that is the responsibility of your software provider, and it’s not only in their interest to ensure their clients’ data is secure, it’s also their primary job and skill set.