Resources covering modern non-cloud (Laravel) deployment? Best practices for deploying updates, serving new features to beta-testers, reliable backups, security, etc.

Hey,

my background building Laravel apps is working on comparably small projects for a few clients that just needed more custom functionality than WordPress could offer and a handful of personal one-off projects for organizations I volunteer for. Mostly apps that you build and not touch anymore for long stretches of time.

Recently, someone approached me with a very interesting offer to develop a more complex application they'd use internally. Laravel seems suitable as no mobile app is required. Even down the road a progressive web app would totally suffice if necessary at all. Their business is on the smaller side of what can be considered a SMB, I'd estimate