In the context of deploying a recommendation system within an e-commerce platform, you are tasked with identifying the key roles involved in the process. The platform aims to leverage machine learning models to enhance sales and improve customer satisfaction through personalized product recommendations. Considering the multi-faceted nature of this project, which roles are primarily responsible for (1) defining how the model's recommendations can be leveraged to achieve the business objectives, and (2) ensuring the technical implementation aligns with these objectives? Choose the two most appropriate options.