When redesigning a site, there’s two main sides you have to focus on, the business side and the marketing side. Marketing focuses more on the general perception of the site, which as described before will be a less text heavy site with a better sense of hierarchy. Business requirements are usually what’s requested from higher ups. For example, IMDbPro is a paid subscription service for the site. Knowing that, it’s important that that feature is clear at both what it does and how to get it, so that the business side of the site sees profit.
When comparing the two, they align fairly well. A better navigation and hierarchy will likely lead to users feeling more comfortable with the site, as well as more aware of features like IMDbPro. Where they may not align though is the design requirements for the business side. Since the site is owned by Amazon, those colors are required for any potential redesign. While this brings unity and a distinguishable brand, it also makes it limiting with how much you can alter certain aspects of the site.