Abbachi Messaouda2025-05-152020-09-22https://dspace.esm-tlemcen.dz/handle/123456789/157The competitive world in which the company operates requiers that the latter treat with care its established relationship with its customers, privileged relationships based on trust, effective communication and a high level of satisfaction in order to retain them for a long time, to ensure a certain level of stability and guarantee the sustainability of the company and multiply its profitsfrRelationship marketing – Loyality – CRM – Satisfaction – CompetitionThesis