Bandwidth-delay product

Okay, so imagine you're playing a game on your tablet and your friend is playing the same game on their tablet, but they're in a different city than you. When you tap the screen to make your player move, it takes a little bit of time for the game to register your movement and show it on your screen. This delay is called "delay" or "latency".

Now, let's say you have really good internet and your game loads really fast. This is called "bandwidth". So, you can load all the game's graphics and sounds quickly, but you still have to deal with the delay.

The bandwidth-delay product is just a way of measuring how much data can be sent across a connection during that delay. It's like asking how many players can move across the game in the time it takes for your movement to show up on the screen.

So, if you have a really fast internet connection with low delay, you can send a lot of data across that connection in a short amount of time. But if you have a slow connection with high delay, you can only send a little bit of data across that connection during that time.

That's why sometimes, even if your internet is fast, things can still seem slow. It's because there's a delay, and that delay limits how quickly data can be sent back and forth.