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It should be obvious: People sell on eBay in order to find customers for their merchandise. What s changed in recent years is the role eBay plays in the relationships businesses develop with those customers. In the early years, many companies saw no need to go beyond having an eBay Store. But now, with rising eBay fees and increased competition cutting their profit margins, an increasing number of businesses see eBay primarily as a front end tool. eBay gives them a way to make initial contact with customers, but their ultimate goal is to sell directly to those customers without eBay s involvement. Creative Paper is one of those businesses. We don t do much better than break even with eBay sales because we are selling such small items, says McCullough. When we started doing this, eBay was charging a dime per sale. Now they charge 30 cents to list an item, and more for Gallery photos and other extras. The whole deal costs 60 to 70 cents per listing now. In the beginning, four out of five auctions were selling. Now, if I list ten auctions, I am lucky if three of them sell. Now, we encourage customers to go to our web site to make purchases. The whole point of eBay is to get customers we can sell to later on. The Creative Paper web site (http://shop.store.yahoo.com/creativepapers/index.html), which is hosted by Yahoo!, is shown in Figure 10-2.

Once the summary information about an information entity is obtained by the using the find_xxx call, the summary information, which includes the keys of the matched entities, is used in the get_xxxDetail call as the input to obtain detailed information on the matched entities Examples of such types of calls include get_tModelDetail, get_serviceDetail, and get_businessDetail Commercial Products Of the various Web Services standards discussed in this book, the adoption of the UDDI standard by the computer industry has been the most difficult because of some of its shortcomings One of the major hurdles is that the classification system used in UDDI is a highly technical taxonomy that fails to capture the Web Service semantic required to fully exploit the potential of Web Services (that is, dynamic discovery, selection, and binding).

Any session can be modified while the session is in progress. The media can be added, deleted, or changed, as can participants. A good example of this would be a Webinar, where participants come and go and the media changes from audio to video and file sharing. When either UA wishes to modify a session in progress, it initiates a new INVITE using the same CALL-ID. The dialog ID is also the same which means the TAG values used

The second important shortcoming is that UDDI does not provide a standard repository capable of storing artifacts, nor does it provide governance capabilities for managing the end-to-end life cycle of the various types of artifacts related to services The industry has tried to solve these problems in multiple ways Some vendors have used extensions to UDDI in their products, whereas others have adopted a more independent path In almost all cases, the functions of the registry have been combined with a repository in order to provide the storing of service artifacts and governance capabilities For example, IBM s application server, WebSphere Application Server (WAS), still supports UDDI However, IBM s service registry and repository product, WebSphere Service Registry and Repository (WSRR), does not rely on the UDDI standard Currently, efforts are underway to develop new standards in this area.

When you are just starting out, customers come and go. You barely notice their names and addresses as you write them on the package you re about to take to the post office. But smart businesspeople know those names and addresses are like gold. They or their employees record the information in databases for later use. What kinds of things can you do with this business treasure Some suggestions are presented in the following sections.

5

Regardless of whether or not a product uses UDDI, the functionality for service discovery in these commercial products is still quite weak This is because, in order to discover a particular service in one step, you have to know the exact service name or ID This is undesirable for the following reasons:.

A goal of Web Services and Service-Oriented Architecture (SOA) is to decouple as much as possible the service provider from the service consumer. The service consumer is usually a programmer writing a client application, whereas the service provider is another programmer/developer who develops a service. Because consumer programmers can only discover a service through a registry, if they know the exact name or key, they must have a direct/indirect communication with the provider-side programmer/developer, thus forcing a strong coupling between the service provider and the service consumer developers.