You may not need a Taskserver. You may be content with using Taskwarrior on a single device. But if you wish to share tasks between several clients, the Taskserver is the only option that properly syncs data.
With a Taskserver, you can share tasks between clients/devices, eliminating the need to keep your data up to date on multiple clients, reducing data entry.
One nice side effect of using a Taskserver is an automatic backup of your tasks.
Setting up your own Taskserver means having complete control and privacy.
There are now hosted Taskserver accounts where you can sync your tasks without needing to set up and maintain a personal Taskserver. See our tools services section.