Welcome to the QuickBooks Community. I'll ensure to provide the developer with QuickBooks. Then, how QuickBooks back up your data.
QuickBooks is an accounting software package developed and marketed by Intuit.
On the other hand, you don't have to be concerned about saving your QuickBooks data on a flash drive because QuickBooks Online automatically backs your dataup with the same level of security used by banks and financial institutions.
Please know that the security of your data is our first priority. That's why whenever there are changes to your company file, your data is saved to two hard drives. We sometimes copy all data to a third-party hard drive in order to protect your data in case something happens to the first two hard drives. Then, automatic backups are performed every night.
Lastly, I'm adding this article to see various features you can use and how to utilize them while working your business using QBO: Help guide for QuickBooks Online. It contains topics about accounting, banking, and payments to name a few.
Please let me know if there's anything else you need to know about how QuickBooks works. I'm always here to help you anytime, makerting-epicsl. Take care and keep safe!