Abstract: A database server (2) stores a large number of electronic assets—for example, images, documents, video streams, audio data and so on. An application server (3) stores, for each of a plurality of products, a plurality of product parameters, one of which is a subset of the electronic assets in the database server (2). Another parameter for each product is a release date. A web server (1) allows visitors to log onto the database server (2). The application server (3) stores parameters for visitors, including lead times, and makes available to a given visitor all assets that are relevant to that visitor and have not yet reached their release date and are within the visitor's lead time. This is convenient for the visitor, who does not have to filter out irrelevant data. Moreover, the amount of traffic passing over the system is thus significantly reduced, thereby improving efficiency and operating speed of the system and reducing the likelihood of blockages.