Well uh that kinda depends on what you mean by strong setup 
You might want to look at YunoHost • index which compares at home vs. on a VPS
Well, there’s the backup system in yunohost. The drawback at the moment being that it is not 100% trivial to extract the archive from the server … but see here for a solution using filezilla
Then the cool stuff, which is not yet integrated in Yunohost, but just as an app (or if you prefer, a module) is to use borg backup to store backups on a remote backup. This kind of backup is encrypted and deduplicated to optimize space. See [Borg & Borg Server] Deduplicated, encrypted and remote backups
We have a system to evaluate and test the quality of application. Apps obtain a quality score, or as we call it “level”. Currently the best level is 7, meaning the app supports installation, removal, upgrade, backup/restore, possibly integration with SSO/LDAP, respect packaging good practices and other stuff. You’ll see the corresponding number in the app list when you try to install one. Since YunoHost 3.4, if an app has questionable quality (level < 2), YunoHost will try to discourage you to install it 
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Basically if an app is at least level 3, it should be kinda okay to use it.