Code Assembly is a feature of Cloud Platform that manages dependencies for Drupal and Node.js applications. It automates the installation of dependencies specified in composer.json and composer.lock files for Drupal, or through Node Package Manager (NPM) for Node.js applications. It facilitates the building and deployment of hosting artifacts. It helps reduce repository footprint and simplify maintenance tasks. Code Assembly supports deploying branches to non-production environments and assists in smooth transitions to the production environment through a user-friendly interface. For more information, visit Code Assembly.