Chapter 3 Service Endpoint Design

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Register a service under the proper taxonomy.

It is important to register your service under the proper taxonomies. When

you want to publish your service on a registry, either a public or corporate registry,

you must do so against a taxonomy that correctly classifies or categorizes your

Web service. It is important to decide on the proper taxonomy, as this affects the

ease with which clients can find and use your service. Several well defined indus 

try standard taxonomies exist today, such as those defined by organizations such

as the North American Industry Classification System (NAICS). 

Using existing, well known taxonomies gives clients of your Web service a

standard base from which to search for your service, making it easy for clients to

find your service. For example, suppose your travel business provides South Sea

island related adventure packages as well as alpine or mountaineering adventures.

Rather than create your own taxonomy to categorize your service, clients can

more easily find your service if you publish your service description using two

different standard taxonomies: one taxonomy for island adventures and another

for alpine and mountaineering adventures.

You can publish your Web service in more than one registry. To further help

clients find your service, it is also a good idea to publish in as many applicable

categories as possible. For example, a travel business selling adventure packages

might register using a product category taxonomy as well as a geographical taxon 

omy. This gives clients a chance to use optimal strategies for locating a service.

For example, if multiple instances of a service exist for a particular product, the

client might further refine its selection by considering geographical location and

choosing a service close to its own location. Using the travel business service as

an example, such a service might register under the taxonomies for types of

adventure packages (island and mountaineering), as well as under the taxonomies

for the locales in which the adventure packages are provided (Mount Kilimanjaro

or Tahiti), thus making it as easy as possible for a prospective client to locate its

services.

3.6.3 Registry Implementation Scenarios

Once you decide to publish your service and establish the taxonomies that best iden 

tify your service, you are ready to implement your decisions. Before doing so, you

may find it helpful to examine some of the registry implementation scenarios that

you may encounter.