The debate between monorepo and polyrepo repository structures is crucial for software teams, as it affects the organization of their codebase during project development. A Monorepo designates a single version-controlled repository that expands to include more projects and service libraries, providing a centralized location for sharing and collaboration. In contrast, a Polyrepo stores each project component in distinct version-controlled repositories, known as multiple repositories. This separation is common in microservices and large organizations operating with independent teams. The choice between monorepo and polyrepo depends on the team's size, project complexity, and collaboration needs to ensure optimal development efficiency. Monorepos are suitable for teams requiring shared libraries and unified build processes, while polyrepos excel when teams need autonomous service development and independent service expansion capabilities. Both approaches have their advantages and disadvantages, and it is essential to consider these factors before making a decision.