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What Are XML Web Services and How Do They Fit into the .NET Framework?

Sep 6, 2002

📄 Contents

␡

What Are XML Web Services?
When Are XML Web Services Appropriate?
Using the .NET Framework to Create XML Web Services
Hailstorm: An XML Web Services Example
Summary
Q&A
Workshop

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Hailstorm: An XML Web Services Example

To best illustrate where development with XML Web services is heading, it may be good to look at where one of its major players, Microsoft, is heading with it. Microsoft recently announced the Hailstorm project, which is a series of XML Web services built around Microsoft's own passport authentication technology that will allow developers to create applications that truly integrate the user's Web experience.

Table 1.1 provides a listing of the services that Microsoft has currently implemented in the Hailstorm framework. With these services, applications can be built that would allow users to, for example, schedule trips and hotel reservations, keep records of their expenses, and list their itineraries, with access opened up to others in their company to track their whereabouts, keep updated billing information, and notify the users of any additional meetings that the head office may wish to schedule for them.

Table 1.1 Current Hailstorm Services

Service	Description
myAddress	Provides electronic and geographic address information
myApplication_Settings	Provides application settings
myCalendar	Provides time management functionality
myContacts	Provides an online address book
myDevices	Provides online access to device information
myDocuments	Provides a method for remote document storage
myFavorite_	Provides a list of favorite URLs,
WebSites	like the option in Internet Explorer
myInbox	Provides access to items such as e-mail and voicemail
myLocation	Another service that provides addressing information
myNotifications	Provides electronic notifications
myProfile	Provides profile information such as name, alias, pictures, etc.
myServices	Provides online access to a list of a user services
myUsage	Provides usage reports on myServices information
myWallet	Provides access to transaction records such as payment information and receipts

Microsoft plans to add more services to the Hailstorm project in the future, creating a very centralized set of services for developers to tap into. Using Hailstorm as a business model, it is not too difficult to imagine companies switching from traditional consulting services to the XML Web services market—either providing XML Web services for third-party software developers to use or creating XML Web services that they themselves integrate into the applications they build for clients.

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