During the past few years the evolution of Internet like sale and mass media, has supposed an impressive scaling as before it had never been lived. Web in HTML was begun with the design of pages, later Webs with animations in flash, later autogestionables pages, with dynamic load and data bases of content. For which it was necessary to know how to program in some language oriented to Web like php or asp. Now much is facilitated to us the task with CMS of the type WordPress or Joomla in which nivle does not need so technician. But in the last years the growth more hard comes from the hand of the stores online. The electronic commerce. A source of income for many companies that have seen in Internet perfect means to mount a store online without much cost more than the development on the part of a designer of the business online and his later promotion and positioning in finders. We will see the growth that continues having this type of commerce in Spain.