A connected gateway in the automotive industry is a controller that serves as the interface between different automotive subsystems and external networks, including the Cloud. It plays a critical role in managing in-vehicle networks and facilitates communication with external networks for data exchange. This comprehensive report delves into the vital role of automotive gateway hardware, exploring its evolution and its essential function as a link between vehicles and the digital world. It provides a detailed analysis of the current technology landscape, emerging trends, and differing architectural implementations, offering a keen insight into the major Tier-1 and Tier-2 suppliers and their relationships with Original Equipment Manufacturers (OEMs). By outlining the forecasted impacts of technological trends, the report offers a unique outlook, helping stakeholders make informed decisions in an ever-evolving market.