In 2018, Prime Day (the Amazon-created shopping holiday on July 16) was the busiest shopping day in the company’s history. However, Black Friday and Cyber Monday, the two big sales after the US’s Thanksgiving holiday, have historically been similarly high-grossing days.

Given Amazon’s massive fulfillment infrastructure, any disruption is likely to remain largely symbolic, though. For example, even though 90% of 1,800 workers at the firm’s San Fernando de Henares facility, near Madrid, walked off the line on Friday, the company reportedly had 22 other depots at the ready to handle any diverted deliveries from that location.

Indeed, Amazon told the Guardian that there had been no disruption: “Our European Fulfillment Network is fully operational and we continue to focus on delivering for our customers and reports to the contrary are simply wrong.”

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