An understanding of your audience is vital to the success of any marketing strategy. Granular analytics gives you insight into who is watching your streams, where they are located, how long they are watching for and what device they are using to watch. You will know if the viewer is new to your site or a returning viewer.
The same holds for individual pages on your website. Reports can provide insight into your most popular pages that may correspond with your mostly purchased product. This type of deep insight will help you make marketing decisions that will drive sales and improve your brand recognition while giving customers/viewers exactly what they want.