The Bubble platform is an ecosystem of tools for easily creating applications, with a broad offering in terms of functionality and a comprehensive low-code app-building platform. It's suitable for admin panels, internal tools, and client portals. The Bubble API connector allows users to connect to external REST APIs, such as Cube's, to provide analytical capabilities. Cube is an open-source analytics tool that provides an API layer to connect data warehouses to front-end applications. By leveraging the power of Cube, developers can build metrics dashboards that aggregate data from relational databases and display it using Bubble. The dashboard app will display basic business information, such as orders received, customers who created the orders, and the quantity of items requested. The tutorial covers creating a simple metrics dashboard for displaying data extracted from a business database using Bubble, Cube, and PostgreSQL as the database.