This report discusses the key roles and responsibilities of the marketing function in Hyatt Hotels, including defining and managing brand, conducting campaign management, producing marketing and promotional materials, monitoring and managing social media, producing internal communications, overseeing outside vendors and agencies, conducting customer and market research, and serving as media liaison. It also outlines the link of marketing function with other functions of an organization and differentiates Hyatt hotels with Hilton hotels based on P's of marketing mix. Lastly, a basic marketing plan will be drafted and evaluated.