You can backup to Google Drive for example[1]. If you want to manually make a backup of your file, then it will be saved on a folder in the local device. However, if you choose to "Export" your encrypted vault the program allows you to save your file in a cloud provider, provided that you have it installed.
I saw the Android cloud backup on Aegis but the manual backup is safer. Online backup is easier, especially during migration from one device to another but it is not safe at all. We heard of LastPass password manager issue since two years ago but later funds were later stolen from LastPass users. The issue can start from somewhere taken for granted until people regret.
I also don't support a backup to a cloud provider, too much of a risk for me, but DYING_S0UL was interested in knowing if the program had that particular feature from someone that has used the program, hence my guidance. Still, nothing beats an offline backup of your TOTP secrets.