The debate between monorepos and polyrepos is reminiscent of other classic tech rivalries, where strong opinions often clash. Monorepos, which house multiple projects in a single repository, offer benefits such as reduced overhead for new projects, easier collaboration, and centralized build environments, but can suffer from scalability and CI challenges. In contrast, polyrepos, or microservices, provide focused codebases with greater team autonomy and simpler dependency management, yet they can increase complexity, require significant investment in developer tooling, and pose challenges in debugging and testing. The choice between these architectural approaches depends on factors like team structure, product nature, and technical challenges, and both have their pros and cons that can be mitigated with thoughtful implementation and investment. Ultimately, the decision should be guided by the specific needs of the organization and its capacity to maintain the chosen architecture, whether it is a monorepo or polyrepo, with the right CI/CD tools to manage builds at scale effectively.