Supply Chain Visibility for Customer Service. A Method to Identify Opportunity and Risk Areas - In a world of high complexity and dependency from external factors and where timeliness of service is key for customer service, visibility has become a powerful weapon to better manage company operations and supply chain. The technology can help for that and also it is now more available than before. Companies shall act upon these opportunities and value their advantage. They have to look at their operations, understand which of the "visibility" sense is most relevant for them and evaluate which of the technology-process combination would better satisfies their needs. In that research we tried to develop a method to understand opportunities and risk areas across the supply chain to improve customers service, using also technologies. Keywords: marketing & logistics, supply chain, visibility, logistics technologies, customer service.