What Exactly Is a Network ID and How Do I Find Mine? or Can Someone Explain Network ID in Simple Term

"Can someone explain network ID in simple terms? kinda confused lol"

Hey guys, so I keep hearing about *network id* but tbh I’m not entirely sure what it is? Like, is it the same as an IP address or something different?

Also, how do I even find mine? Tried googling but all the tech jargon just made it worse.

And why does it even matter? Like, is it just for IT folks or should regular users care too?

Thanks in advance for dumbing it down for me! 😅

(PS: if it helps, I’m on Windows 10 and my router’s from Spectrum. No idea if that changes anything.)