Using MongoDB Atlas and Calleido's Customer 360 tool, businesses can build a single customer view to understand their customers' needs and preferences. The key challenges faced by most B2C enterprises are dealing with fragmented data from various sources such as CRM, ERP, and social media platforms. To overcome these challenges, Calleido provides a data processing platform that integrates with MongoDB Atlas to create a unified customer view. This allows businesses to analyze customer behavior, sentiment, and preferences in real-time, enabling them to provide personalized services and improve customer satisfaction. The integration of Calleido and MongoDB Atlas also enables businesses to leverage advanced analytics tools such as Google Cloud Platform's Pub/Sub and BigQuery ML for product recommendations and customer segmentation. By using this solution, businesses can streamline their customer data management process, reduce manual effort, and increase the effectiveness of their marketing efforts.