Resumen
The objective of this work, is to analyze the meaning of electronic commerce in our days taking into account the information technologies; it also will analyze their adjustments, their trends and applications of the same, in the Business to Consumer Relations (B2C), Business to Employee (B2E) and Business to Administration (B2A), Consumer to Consumer (C2C), Citizen to Government (C2G), Business to Government (B2G) and, Business to Business (B2B), as well as how information systems have been very useful to reduce costs, getting technology to change from being an operating support tool to become a strategy one, to increase the sales volume and the profits of the business as a result of this. The trend being taken by businesses and consumers has increased the participation of the companies which apply it in a comprehensive manner, since they reach international markets, while also face another kind of competition that takes place in a global market. We conclude that electronic commerce will remain a tool of great importance to efficiently manage the chains of supply between businesses and consumers through the Internet which allows an integration to reduce costs of ordering, distribution, administration and delivery of input materials.