Ben Achour Sara2025-05-262019-07-11https://dspace.esm-tlemcen.dz/handle/123456789/254Internal communication is one of the essential functions of a company. It facilitates the exercise of tasks, and a better understanding of planned activities and objectives. The development of an effective internal corporate communication strategy is the responsibility of all of the company's stakeholders. This objective can only be achieved through the availability of human, material and financial means to achieve common objectives. In the same context, information and communication technologies (ICT) grew rapidly during the second half of the twentieth century and reached a very high level in the world of communication at the beginning of the third millennium. In order to ensure the development of the company through the internal communication dimension, this study attempts to apply the theoretical data relating to the company FERTIAL Annaba, specialized in the production and marketing of fertilizers and ammoniac, as case study in which national and foreign public and private competencies are brought togetherfrcompanyinternal communicationcommunication objectivescommunication strategyinformation and communication technologies (ICTThesis