I would redesign Amazon.com. Since Amazon's daily traffic is unfathomably high, shutting down their website for even a day to redesign it would result in millions of dollars of lost revenue. However, that doesn't change the fact that the website looks like something from 2015 and has few visually aesthetic features. If I were able to redo Amazon, I would change the layout and color scheme, going for a sleeker look that centers the user's attention on solely products rather than a distracting assortment of graphics and choices. I would also clean up the product info pages and make products from verified vendors more clear and eye-catching.