courtesy of somebody/something
courtesy of (someone or something)
courtesy of somebody/something
1 (also by courtesy of somebody/something) with the official permission of somebody/something and as a favour: The pictures have been reproduced by courtesy of the British Museum.
2 given as a prize or provided free by a person or an organization: Win a weekend in Rome, courtesy of Fiat.
3 as the result of a particular thing or situation: Viewers can see the stadium from the air, courtesy of a camera fastened to the plane.