In 2015, Amazon earned a Guinness World Record for what retail achievement?

Amazon has broken numerous records in the retail world, but one particular achievement earned them an official Guinness World Record that showcased their technological innovation and logistics capabilities. Test your knowledge about this retail giant's record-breaking accomplishment that demonstrated their commitment to pushing boundaries in e-commerce delivery.

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Fastest delivery from order to customer (13 minutes via drone)
Largest single-day online sales total ($8.6 billion on Prime Day)
Most products available on a single e-commerce platform (950 million items)
Most packages shipped in one day (25.3 million during holiday season)