In India, e-commerce routes are more congested, and more unpredictable, than virtual highways. “Floods during the monsoon, traffic jams caused by festivals or work on public roads, pavements broken, addresses untraceable. The list is long, “ laments Santanu Bhattacharya, director in charge of data science at Delhivery, a young Indian shooter specializing in logistics. In the run-up to the festival of Diwali - the festival of lights during which gifts are offered - at the end of October, Indian e-commerce companies are preparing for a peak of activity.