Dissertation presented as the partial requirement for obtaining a Master's degree in Information Management, specialization in Knowledge Management and Business IntelligenceCompanies seek to perform better using their own data to achieve sustainable competitive advantage. By enabling business intelligence tools and techniques companies can get ahead of the competition, however, even with these solutions, some questions still stand which this research aims to answer. This study aims to answer the following research question: how data visualization tools can improve decision making processes based on customer feedback? To fill this gap, this research will explore the literature on data-driven marketing and its relationship with decision making processes, while also diving on data visualization and business analytics. To improve the relevance of the study, a practical approach will also be used, using Business Intelligence tools and techniques, in particular Microsoft Power BI. The research uses real data from a major Portuguese hotel chain and aim to develop a new dashboard that can enhance the capability to improve data-driven marketing decision making, using customer data. The findings show that business intelligence and data visualization tools and techniques allow the development of dashboards with several KPI’s and measures to improve strategic decision-making process, and it allows to still have a quick and objective views of business performance and productivity, exchanging company data in competitive advantages
