systemd dependencies

[Trevor]

systemd activate all units that are dependencies of default.target.

What specifically makes a systemd unit dependent on default.target?

[Blue_bird]

A systemd unit becomes dependent on default.target through one of these dependency relationships:

1. The unit is WantedBy= the default target
WantedBy=default.target

2. The unit is RequiredBy= the default target
RequiredBy=graphical.target

3.PartOf=default.target in unit file
PartOf=default.target

These above mentioned dependencies comes under Direct dependencies

Thanks