But Snapchat, as most web-scale companies, doesn't care whether a single operation gets lost and whether a small number of user have data loss. Whereas Walmart,

But Snapchat, as most web-scale companies, doesn't care whether a single operation gets lost and whether a small number of user have data loss. Whereas Walmart, at least, should care whether every single employee got his salary or whether the taxes for him were booked properly. Therefore a lot of "solutions" of so-called web-scale companies are to naive for an enterprise.