"Was it .1.34 or .1.43?"

Your network now has routers, servers, printers, and access points. Each one has an IP address. You've been keeping track on a sticky note, but the note is full and you just typed the wrong IP for the third time today.

DNS (Domain Name System) lets you give human-readable names to your devices. Instead of 192.168.1.34, you type printer.local or server.mynetwork. Your brain thanks you.

Setting up a local DNS server is one of those small investments that pays off enormously as your network grows.