What actually matters.
WHAT TO BACK UP
Your source: content files, templates, configuration.
Not primarily the output, which can be rebuilt.
WHERE THE SOURCE SHOULD LIVE
Version control, ideally.
That gives you history as well as a backup.
IF YOU DO NOT USE VERSION CONTROL
Keep dated copies of the source somewhere other than your own machine.
WHAT TO ALSO KEEP
A copy of the built output, so you can restore quickly without rebuilding.
WHAT ELSE TO RECORD
Which generator and version Which dependencies How to build it
THAT LAST POINT
A site you cannot rebuild because nobody remembers the process is at risk.
Document the build steps.
WHAT PEOPLE DISCOVER
That the only copy of the source was on a laptop that failed.
WHAT TO TEST
That you can rebuild from your backup.
