@darshpreets There are many such examples, search for "server" in the forum. I remember uses like a web server and even some kind of location tracker in a car. The system is very stable, considering phones rarely reboot, partly because of the read-only filesystem. Although the read-only filesystem seems a limitation at first, there are workarounds for every problem which are ultimately more stable than without ro fs. You can use containers to avoid interfering with the system, such as LXD from the snap package or the default Libertine container.