The report by the Economist Intelligence Unit explores big decision-making processes for business leaders in 2014-15, emphasizing the role of big data and data analysis in shaping strategies. Findings from a global survey of 1,135 senior executives show that big decisions are frequent but often opportunistic, with many executives citing growth as their primary focus, except in North America. The report highlights the need for collaboration and a blend of data-driven insights and managerial intuition to enhance decision-making effectiveness.