This research aims to review the literature and determine talent management as a key priority in most economic entities and start-ups representing high-growth, innovative potential in the new technologies sector. On the other hand, this article analyses different strategies used in start-ups to retain highly qualified employees, develop their skills, and motivate them constantly. It sheds light on finding gaps and suggests creating flexibility between different functions. Finally, we included the awareness of the Algerian policymakers, who try to give opportunities to project holders to realise their brilliant ideas through creating their start-ups and benefit from the business climate to achieve their goals through management and marketing strategies that can benefit their start-ups and their employees.