When Apple released Mavericks, some people were puzzled by the inclusion of the Maps application. After all, it’s easy to understand the value of having an interactive map on a mobile device: You always want to know where you are when you’re on the go. But given that our computers already have access to perhaps the best mapping service (and mapping data) on the planet—in the form of Google Maps running in a Web browser—what’s the point of Maps on the Mac? I can think of several reasons.
The Maps application is the tip of what may be a far more important iceberg: integration. Map data is about more than simply providing pretty pictures in a single application. It’s also a way of providing location information in other apps.
When you create an event and add a location in the latest version of Calendar, for example, that app will automatically search for said location; if it finds it, it will display a small map at the bottom of the event’s Edit window, with a red pin marking the spot and the current weather there. If you click in the Add Alert, Repeat, or Travel Time area and then click on the Travel Time entry, Calendar displays the time it’ll take to travel to your destination—all using information supplied by Mavericks’s built-in maps technology.
read more via MacWorld