When you make a BlueTeam TO-DO list, whatever your use case requires for items 

1.. [[btkn::backup]] has to be entry 0.


"I'll set up backups later."  Yes you will... the day after all your data is lost.

"I don't have any data yet, so backups aren't a priority." They will be when you have a catastrophic data lose.

"My data is safely in the cloud, so I don't need backups..." is the precursor to disappointment as ransomware encrypts all of your data.

"I make a backup, once a month onto an external hard-disk", that's not a backup, that's a snapshot. (Which is the backup equivalent of security through obscurity crossed with busy work.) Backups have to be autonomous, automated, tested and used to restore at a minimum, once a year, (preferably a lot more often.) Recovery needs to be documented, practised and can't be stored on a computer where it could be lost, ransomewared or stolen.

==== Pull vs push ====

Most backup software takes a copy and writes it to a remote location.