The box with many ports that connects your computers, printers and access points so they can talk to each other.
Like a power strip for data: one cable comes in, and every desk gets a socket.
Network covers the firewall and switch, including keeping a managed switch's settings backed up and its firmware current.
Can I plug the office into a cheap unmanaged switch? For a handful of desks, yes. If you need guest separation, phones or cameras, a managed switch makes that possible.

Every WILDCARD card exists to solve one named problem. Find yours.