Objective: This research is part of Sustainable Development Goal No. 12, which promotes responsible production and consumption. Its objective was to identify the relationship between e-commerce and customer loyalty in a Peruvian textile company located in Lima city by 2025. Materials and methods: This is an applied study with a quantitative approach, a non-experimental correlational design, and a cross-sectional. It is work a representative sample of 132 clients, who responded to a structured questionnaire with a Likert-scale questionnaire. Results: The results show a very strong, positive, and statistically significant relationship between e-commerce and customer loyalty (rho = 0.841; p = 0.000). Likewise, strong and significant positive correlations were found in the dimensions of interaction in platform, digital commercialization, and electronic transactions with the loyalty of client...