This work explores the factors influencing digital transformation in local authorities. Digital transformation, aimed at modernizing public services and improving the citizen experience, is approached from a number of angles. Firstly, the state of play examines the initiatives already undertaken, highlighting the benefits and challenges of digitalization in the local public sector. Next, internal determinants are examined, including leadership, digital skills, infrastructure and organizational culture. External determinants, such as the regulatory framework, public-private partnerships and citizen expectations, are also explored. Case studies and best practices illustrate concrete examples of local authorities successfully undergoing digital transformation. Finally, strategic recommendations are put forward to ensure a successful transformation, including support, training, impact assessment and adaptation to technological change. The conclusion summarizes the main lessons and prospects for the future of digital transformation.