Developers, designers, makers, data scientists, or marketers! Participate in the Carrefour Data Hack to prototype Microsoft Azure apps that enhance customer experience and forecast future business trends. Using Microsoft Azure cloud and actual customer data cross-indexed with other data sources (geolocation, weather, social networks, etc.) you'll be able to create a service that improves the customer experience. Alternatively you can tap into social networks, blogs, forums and news sites and build algorithms to detect consumer trends -- anticipate shortages, predict success, etc.