Google's Map Maker tool is shutting down. It sounds like a sad situation, but on the contrary Google is simply getting rid of a redundant service that's available to consumers. To be more clear, Map Maker is not yet a redundant service, but it will be once Google moves the features of Map Maker into the core Google Maps app, which is exactly what they're doing and the reason for shutting down the old tool, as there will be no need to have it in place when Google is already offering those functions somewhere else.
For a time, Google shut Map Maker down due to issues it had with individuals toying with the information. If you're unfamiliar with Map Maker, it's a tool that lets anyone edit the maps for Google Maps with details about locations on the map. So, you as an average user and someone who does not work for Google could open up Map Maker and edit things like the names of buildings if they were incorrect. After having taken it offline briefly, Google ended up reopening Map Maker back in August of 2015 in most territories where it was available before.
So, when will Map Maker go offline for good? Google states that they'll be transitioning the Map Maker features into the core Google Maps app beginning in March of 2017, at which time they'll discontinue the separate tool, which means that people will have up until then to access the Map Maker tool in its current state. Having said that, Google will no longer be allowing moderation in Map Maker for edits that were made in Google Maps as of today. To continue contributing to more accurate information in Maps, Google points users to the Local Guides Program which allows them to earn points for each edit they make to details about places they've been. This change won't be stagnating the flow of new updates and features that Google would otherwise be introducing to Map Maker if it were staying the way that it is, as they note that they will continue to improve upon the service and add new features from time to time. They also highlight that by rolling Map Maker into Maps, it will allow them to focus more on bringing the best experience to the service on both mobile and desktop.