Fortunately, Google has no intentions to make the millions of goo.gl links out there suddenly become broken after the deadline, so the company has said that they will continue to work - you just won't be able to create new ones.
The Internet giant announced the development in a blog post, while stressing that it will turn down support for goo.gl url shortener beginning March 30, 2018.
By discontinuing the service, it will allow developers to focus on Firebase Dynamic Links API. Starting on April 13, 2018, new and anonymous users will no longer be able to reach the goo.gl console to create short links.
Google launched g.co in 2011, another URL shortening service that it uses for internal links exclusively. Sadly, this service will go down in one year from now, but it will stop accepting new users on April 13, 2018. "However, existing short links will not be migrated to the Firebase console/API". The best example of Firebase Dynamic Links is how you can transfer navigation information from Google Maps on its desktop website to the Google Maps Android or iOS app. The tool, however, will still be accessible for all the existing users only to access the historical data related to all short URLs they are already created. Existing users will have access to all features until March 30, 2019.
Google says consumers can use FDL but also recommend services such as Bitly and Ow.ly.
While this could be upsetting, it really isn't that big of a deal to the numerous other URL shorteners that are available. After this period, all links will continue to redirect.
As for developers, FDL short links will automatically detect the user's platform and send the user to either the web or your app, whichever is appropriate.