Goldman Sachs experts predict that the annual profit of Russian classifieds will grow by 1.5 times to reach 47 billion rubles by 2020. In no small part this is thanks to the focus on technologies that are meant to optimize the growing costs of online resources. How to build a strategy in this line of activity, and which tools to rely on? Discusses Andrei Rybintsev, Head of Analytics at Avito.