Amazon has a repo per package model, but has a meta-versioning system (called version sets) that tracks revisions of packages built together and a way for decla

Amazon has a repo per package model, but has a meta-versioning system (called version sets) that tracks revisions of packages built together and a way for declaring package dependencies. So in some sense you're building your own monorepo out of a bunch of packages (usually by branching off a parent version set). It fulfills a lot of the same goals of having a monorepo in terms of scaling a large organization, while having somewhat different pros and cons.