Who remembers when Target's website was hosted by Amazon.com (not AWS)? Probably 6 or 7 years ago now. IIRC Toys'R'Us was also but left earlier.
I remember when the new Target website launched, and they had a 'Credits' page on the website (or a press release?) that listed over 50 partners that made the launch possible, kinda crazy and not surprising that the website failed on launch day.
Additionally, Target partnered with a popular designer to launch their product line on the same day to celebrate the new website, adding insult to injury with a huge traffic spike.
Their inexperience in operating a retail website was painfully obvious. For example, the search results were accurate when really you want to optimize for the customer experience and not accuracy - the first couple pages of search results for an item were all the right items but also all out of stock, so it looked like a very empty store as you clicked through page after page of unavailable items. The search results should have sorted in-stock items to the top by default.