This document introduces the Digital Evolution Index (DEI) created by The Fletcher School at Tufts University to measure the digital evolution of 50 nations. The DEI analyzes six years of data on how countries are transitioning their citizens and economies to the digital future. Key insights from the index include understanding countries' regenerative capacities after the 2008 economic decline and how they are preparing for opportunities and challenges of increasing digitization. The DEI can help policymakers design strategies to boost digital competitiveness and help businesses identify patterns to inform their global expansion plans in the digital economy. While technology holds potential gains, countries and companies need strong policies and strategies based on understanding each nation's digital progress and environment.