abduco provides session management i.e. it allows programs to be run independently from its controlling terminal. That is programs can be detached - run in the background - and then later reattached. Together with dvtm it provides a simpler and cleaner alternative to tmux or screen.
(dvtm being a terminal window manager to have multiple tabs or buffers)

However, on its own it can also bring session management to something like wezterm which has amazing window management on its own but no real session management. Very neat and 'unix-y'