Show the server status of your app right on your landing page Having a status page is kind of mandatory these days and luckily, there are a bunch of good services out there which can monitor your Application health and notify you if something is down.
It comes with tons of features (especially for Laravel Applications) and it also provides you with a nice status page that you can use right out of the box. A kind of hidden feature is the JSON endpoint the status page exposes using https://status.yoursite.com/json.
Of course, you can go totally crazy and build your own status page or get an even more detailed message when some domain or service is down.