Power over Ethernet (PoE) technology, traditionally used in networking environments to transmit both data and electrical power over Ethernet cables, is making significant strides in automotive applications. PoE's ability to streamline wiring complexity, reduce weight, and improve energy efficiency makes it a compelling solution for integrating advanced electronic systems in vehicles. This article explores the role of Power over Ethernet (PoE) in automotive applications, its benefits, challenges, and future prospects in shaping the In-Vehicle Ethernet Market.