You can reuse existing modules and themes with PrestaShop Enterprise, but there are important conditions to consider. It is strongly recommended to install only certified or validated modules to ensure compatibility with the Enterprise environment.
This process aims to ensure security, performance, and stability. If you have custom or third-party modules, they must undergo a compatibility check and may require adjustments before being deployed on Enterprise.
This approach ensures that your store remains stable and secure, but it means that not all modules or themes can be immediately reused without review or adaptation.