Polyrepo vs. Monorepo - How Does it Impact Dependency Management?

Endor Labs opted for a monorepo architecture over polyrepo primarily due to its advantages in centralized dependency management, which enhances development speed and reduces risks. In a monorepo, all code and libraries are stored in a single repository, allowing for a unified software bill of materials (SBOM) and providing a clear overview of dependencies and their versions, which is more efficient than managing separate repositories as in a polyrepo setup. Monorepo architecture facilitates easier dependency ownership and makes updates more scalable, as changes to dependencies are centralized and immediately affect all projects. However, this can also mean that a regression in a dependency might impact the entire codebase, whereas polyrepos, by decentralizing repositories, isolate these effects. Despite the challenges of ensuring that updates don't negatively affect all projects, Endor Labs believes that with the right tools, a monorepo can increase development velocity and streamline dependency updates, aligning with their engineering culture and product delivery goals.

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