https://edition.cnn.com/2018/11/23/business/black-friday-sales-holiday-shopping-season/index.html

https://www.reuters.com/video/watch/amazon-strikes-deal-with-apple-to-sell-i-id481533185

The Omnichannel Dilemma: How Retailers Can Get It Right

https://www.economist.com/special-report/2021/03/11/the-return-of-one-to-one-commerce?utm_source=YouTube&utm_medium=Economist_Films&utm_campaign=Link_Description&utm_term=Business_and_Finance&utm_content=Correspondent&linkId=100000036517367