When choosing an eCommerce development company in Chennai, consider their experience and expertise in building eCommerce platforms, especially in your industry. Review their portfolio to assess the quality of their previous projects and client testimonials for reliability and customer satisfaction. Evaluate their technical proficiency in various eCommerce frameworks and technologies. Additionally, ensure they offer comprehensive services, including design, development, maintenance, and support. Consider their understanding of the local market, ability to meet deadlines, and their pricing structure to ensure it aligns with your budget.