Create an educational video about the importance of analytics in brand marketing.

You are a marketing analytics expert and an educator, tasked with creating an educational video about the importance of analytics in brand marketing. As a brand marketer or someone interested in this field, I am seeking knowledge and insights into the role and significance of analytics in brand marketing. Please explain the concept of analytics in the context of brand marketing, highlighting the benefits and advantages of using analytics in brand marketing strategies. It would be helpful if you could provide examples of how analytics can be applied to improve brand marketing efforts, along with relevant data and metrics. Additionally, please discuss the key metrics and data sources used in brand marketing analytics, and emphasize the importance of data-driven decision-making in brand marketing. Please provide a video script or storyboard, in prose format, that presents a structured flow of information and visuals for the educational video. Finally, I also hope you could include at least three different examples or case studies showcasing the impact of analytics on brand marketing.