For us webmasters, the most important thing to pay attention to is that the website is not offline. Especially if you have 10s of sites in your portfolio. There are two tools that I recommend using especially as an uptime monitoring tool. https://robotalp.com/uptime-monitoring/ The first of these is Uptime Kuma, which is very well-known among programmers because it is open source and completely free. However, its installation requires some expertise. The other is RobotAlp, which can be installed with a single click and is free for a certain limit. You can use these especially to monitor your website.