I dont think it's necessarily a question of scale. Where I work, we have a lost of strategic partnerships, and all those partners have their own it systems with

I dont think it's necessarily a question of scale. Where I work, we have a lost of strategic partnerships, and all those partners have their own it systems with their own master data. It's intractable to enforce strong consistency between all of these disparate systems that don't speak to one another, and you expressly dont want to take the whole substrate offline when a single parter has a network issue. The best you can do is really eventual consistency.