What is the main advantage of systemd?

The main advantage of systemd is its unified and efficient management of services, processes, and system resources.

Specifically:

• Parallel loading: Significantly speeds up system startup by launching services simultaneously.
• Dependency management: Clearly defines the order of service startup, ensuring their correct operation.
• Unit files: Uses declarative files to describe services, mount points, sockets, and other objects, making configuration transparent.
• Logging: The centralized journald system collects and stores logs of all services.
• Control groups (cgroups): Allows efficient management of resources (CPU, memory) for individual services.
• Integration: Serves as the foundation for many other system components.