If Yandex.Maps for Android or iOS is installed on a user's smartphone or tablet, you can launch it from another app or a web page in a mobile browser. On a website, just add a link with a special URL scheme. In an app, you will need to embed it in Java or Objective-C code.
Configure the link to show the user specific coordinates on the map, a placemark, a route to follow, or search results for map objects.