A monorepo, or monolithic repository, is ==a version control strategy that stores code for multiple projects in a single repository==. This differs from the more traditional approach of having a separate repository for each project.
Benefits of a monorepo
Improved collaboration: Shared code and tooling encourage collaboration across teams.
Streamlined version control: A single repository makes it easier to manage versions.
Improved code visibility: Everyone can see everyone else's code.
Simplified dependency management: Sharing dependencies is easy because all modules are in the same repository.
Atomic commits: A developer can update multiple projects in a single commit.
Companies that use monorepos
Google, Facebook, Microsoft, Uber, Airbnb, and Twitter.
Monorepo challenges
However, a monorepo can slow down development if bugs prevent the release of new code.
Related terms
A monorepo is different from a monolithic application, which combines sub-projects into one large project.