A Universal Link is very similar to a deep link. Deep links allow apps to link users straight into a certain section of an application. Before Universal Links, developers had to use a custom URL scheme to create their deep links.

You might have seen a URL with a custom scheme in the past. These URLs are easily recognized and look as follows:

mustc://FamilyMember/jack 

It's evident that this isn't a regular web URL because web URLs start with a scheme of either http:// or https://. An application can register itself as capable of opening URLs with a certain scheme. So, the MustC app we've been working on could manifest itself as a handler of mustc:// URLs.

However, there are a couple of downsides to this approach. First and foremost, this URL isn't shareable at all. You can't send this URL to any...