The coronavirus pandemic has affected large, medium and small businesses, which were forced to adapt to a new reality. The epidemic has affected all countries, forcing them to impose restrictions in order to stabilize the situation in the health sector. Rapid digitalization has changed the traditional marketing, and the global crisis has forced governments and companies to support citizens. The article examines Internet tools and online business activities of Russian companies during the COVID-19 pandemic. It analyzes measures aimed to support companies by the governments of European countries, the United States and Russia in the context of the COVID-19 pandemic. The main problems for small and medium-sized businesses are described. Attention is paid to the impact of the coronavirus pandemic on the development of the agricultural industry. It was revealed that most agricultural enterprises were not affected by restrictive measures. The most affected agricultural businesses are manufacturers of high-value, high-cost products, and suppliers of products to restaurants. The measures developed can improve the financial situation of small businesses after the quarantine. These are an increase in the minimum wage, rent freezing, credit holidays for all small and medium-sized businesses, and tax payment deferral. Further development of online trade in farm products requires solving three main tasks: ensuring the veterinary well-being of peasant (farmer) households, creating mechanisms to control the quality of farm products; simplification of farmers' access to credit and leasing resources necessary for the development of production; ensuring stable sales of farm products.