Before Dollar started using Web services, tour operators had to rely on an EDI connection to book a car reservation electronically with the Tulsa, Okla., company. That was expensive and inflexible. Building an interface took as long as two months, and it had to be rewritten if the system on either side changed. Now, tour operators book reservations by sending a text message using HTTP protocols. The company's Microsoft BizTalk server parses that message using Soap and WSDL Web-services protocols unique to each operator to book the reservation. "You send text over HTTP, I can receive it," Osbourne says. "Simplicity, to me, is the key."
Security is one of the biggest obstacles to expanding many companies' use of Web services. Dollar is concerned about the issue, Osbourne says, but it's solving the problem by exposing its Web-services reservations system only to known business partners operating from specific IP addresses.
Using Web services often dramatically speeds integration, but there still can be problems. And skepticism abounds about yet another new wunderkind technology. Osbourne himself had doubts when Dollar's Web-services apps were first installed and his team spent six weeks trying to resolve problems with the company's reservation system. The Web-services applications were presumed to be the culprit--until Osbourne's team found that a balky database and unrelated configuration problems were to blame.
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Dollar also uses Web services to make it easier for customers to connect to its Web site from Internet-enabled mobile devices. Osbourne says that using Mobile Internet Toolkit, a free Microsoft download to VisualStudio .Net, the Dollar IT team built an interface that senses what device is requesting a Web page and formats the page to best fit that device. Using Web services meant Dollar's IT team didn't have to write code for each device, because Web services provided a new interface to deliver the information. "We just keep finding more uses for Web services," Osbourne says.
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Dollar keeps finding uses for Web services, Osbourne says.![]()
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