Policymakers and scholars have shown growing interest in startups, particularly in recent years of economic crisis, as nations seek to rebuild their economies and foster employment through entrepreneurship and innovation. Many new businesses fail in their early stages due to insufficient access to the financial and managerial resources needed to sustain their expansion. Only a few survivors experience substantial growth and contribute significantly to job creation (the so-called 'Gazelle enterprises'). This book delves into this evolving field of research, featuring contributions from Italian scholars affiliated with the Startup Study Group of SIDREA, the Italian Society of Accounting and Business Administration. The authors examine the key factors that influence the success or failure of startups, with a focus on identifying enterprises with a high probability of survival and growth. The volume also explores related topics such as sustainability, performance measurement, and valuation of startups. Designed to bridge theory and practice, this book is a valuable resource for academics and finance professionals alike, offering insights into the best practices and strategies that drive successful startups.