Difference between Service and Systemctl

Question

systemctl command which is mostly used to enable services to start at boot time.

systemctl enable service_name, and the service will automatically start at boot time.

What is the use of service start service_name

Answer 1

Both commands are used to up and down services in GNU/Linux.

But, service command is using by sysvinit, and systemctl is using by systemd.

In systemd, service command exists yet, but only to legacy compatibility with old sysvinit scripts