Strobes allow you to link multiple assets belonging to the same application or service so you get an agglomerated risk score of all linked assets.
When it will be useful?
Say you have a web application for which you have multiple assets such as the app itself, its API service, app server, DB server, etc. Here, you would like to get an overall risk score of your web application and not of an individual asset. In such a case, linking all these relative assets comes into play.