bonusservice
nounUK /ˈbəʊnəs ˈsɜːvɪs/
US /ˈboʊnəs ˈsɜːrvɪs/
An extra helpful thing you get for free on top of what you already have.
The hotel gave us a free breakfast as a bonusservice.
OTHER MEANINGS
2. An additional feature included with a product at no extra cost.
The phone comes with a bonusservice that backs up your photos.
3. A special favor or help given beyond what is normally expected.
The librarian offered a bonusservice by finding the book for me.
4. An extra part of a job or deal that makes it better.
Free snacks are a bonusservice of working in that office.