Every single year, Google announces that it has commissioned a new data center. More and more data centers have been set up by the company all over the globe. There is even an underwater data center and there are rumors that the company plans to set up a data center on the moon as well as in space. This is done to improve the cloud storage and data redundancy of the company. With Google online backups, you can be assured that all your data is stored safely in the cloud. In case some data centers get destroyed in a natural disaster or war, your data will not be compromised.
If your phone gets damaged or you lose it, you can always buy another phone and sync the phone with data associated with your account. That said, you only need a Google account to back up all your data, whether personal or business-related.