Monorepos in 2026: The Tooling Has Finally Caught Up

Monorepos have always made architectural sense for large organizations building multiple products that share code. The problem was always tooling: builds were slow, change detection was unreliable, and the developer experience was painful compared to isolated repositories. That’s changed dramatically in the past three years.

The Tooling That Changed Things

Nx and Turborepo have solved the two biggest monorepo tooling problems: affected-code detection (only rebuild what changed) and remote caching (share build artifacts across the team). A Turborepo-powered monorepo with remote caching enabled means engineers almost never wait for a full rebuild — they hit cache for the packages they didn’t change.

The Organizational Benefits

Atomic commits across packages, consistent tooling, shared code without npm package publishing overhead, and a single source of truth for the entire organization’s codebase. These benefits are real and significant. They’re also only realized if the monorepo has clear ownership conventions — otherwise the benefits are offset by coordination overhead.

When Monorepos Don’t Make Sense

Very large organizations with genuinely independent teams working on genuinely independent products. Open source projects where contributors don’t need access to the entire organization’s code. Projects where the build and test times would be prohibitive even with tooling optimizations. The monorepo isn’t right for every situation — it’s right for most multi-product organizations building with shared code.