Roc Nation is an American entertainment company founded by Jay-Z in 2008. Headquartered in New York City, the company is a successor to his previous Roc-A-Fella Records label, with additional offices in Los Angeles and London. From Wikipedia
Def Jam’s request to alter Kendrick Lamar’s verse prompted Pusha T to negotiate exits of both Clipse and his solo deal, clearing the way for Roc Nation distribution.