Okay kiddo, so you know when you look at a map on your phone or computer? Well, some maps are not just pictures, they also have information about the things you're looking at on the map like how tall a mountain is or what kind of trees are in a forest.
Now, have you ever heard of a weather forecast? It tells us what the weather is going to be like in certain places at certain times. Well, a web coverage service is like a weather forecast, but instead of telling us the weather, it tells us information about the things on a map.
For example, let's say you want to know how high a certain mountain is. With your web coverage service, you can find that information out without having to go to the mountain yourself.
It's a really helpful tool that helps us get information without having to go to every place in person.