For security reasons, many system administrators block access to their internal networks through firewalls, which also end up invalidating the use of technologies that do not use port 80 HTTP.įurthermore, the portability of Web services has a price to pay. The great advantage of using this standard lies in the issue of accessibility. This peculiarity is explained by use of XML, which is a standard language for data exchange.Ģ) HTTP use for messaging. So what differentiates it from other to justify its proposal and use are the following points:ġ) Independence of implementation and programming languages platform. It is worth noting that programs, and non-human, access the web services.Īs previously mentioned, Web services are nothing more than a new distributed computing technology. The web service, in turn, returns a response to the client, containing information about the informed keyword. The customer who wants information on a particular keyword sends a request to the service, informing the keyword of interest. This service is published on some server and the client can locate it through discovery methods. According to these provisions, the web services have been proposed.Ī simple example is a web service that implements a search service on the Internet. In addition, the proposal also included the independence of programming and/or operating systems languages. What is a web service? A few years ago, the world of distributed computing was surprised with an innovative proposal, based on standard techniques to describe interfaces to software components, methods for accessing such components by means of interoperable protocols and discovery of methods that enable the identification of important service providers.
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