The necessity of teachers’ knowledge and abilities being updated on a regular basis in a world that is changing quickly determines the paper's significance. To do this, new strategies for planning teachers’ professional development that consider their unique needs and traits must be developed. Digital platforms provide new opportunities for creating personalized trajectories of professional growth, enabling teachers to access relevant knowledge and skills at their convenience and in preferred formats. The research aims to develop a methodology for personalized teacher professional development trajectories based on digital platforms. The authors analyze how modern digital platforms can facilitate the personalization of teacher training, considering individual needs and goals. Special attention is given to the concept of personalized professional development trajectories, which are built on diagnosing teachers’ competence levels and needs. The article also presents the main principles and approaches to understanding personalized learning, as well as the stages of teacher professional development. The authors emphasize that the implementation of digital platforms in education faces challenges such as digital inequality, ethical issues of data processing, and resistance to innovation from parts of the teaching community. The article is of interest to researchers in education, teachers, and anyone concerned with the challenges of teacher professional development in the digital age.