EN
The paper presents the changes that have occurred on the e-commerce market in Poland. We examined both the supply side and the demand side of the market. Very fast development of this market was possible due to technological innovation, eg. mobile Internet and mobile applications. The e-commerce market includes online stores and area of finance, communications, logistics, marketing and electronic training. The online stores are the most important part of e-commerce. Turnover of e-commerce in Poland increased very quickly, because the rate of 15% per year. In 2014, the highest percentage of Internet shoppers were in the age group 25-34 years (59.9%) and the smallest in the group of 64-74 years (6.2%). The study con-cerned the years 2010-2014.