How did Machine Learning save cost for eCommerce companies

The company was facing a high chance of Failed Delivery Rate -- where Buyers (those who bought stuff on the eCommerce platform such as Shopee, Lazada, Amazon, eBay, etc.) would decline their parcels at the very last minute. It wasted a huge amount of money and the Management Board wanted to reduce that rate. Two years ago, it was the first time I took the new role and started leading the Data Team. One day, there was an important meeting, and I was the only data-guy in a room full of C-level. People were in one of those follow-up meetings, discussing the total failed delivery (FD) cases, its increment, the potential root cause of each case, the major reasons, its trending and many more while I was the only one who knew nothing.