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It is a fact that the field of informatics is extremely dynamic. Producers and users of software products are looking solutions to the multitude of problems they are confronted with. The focus is on finding cheap, flexible interoperating and reusable for informatic solutions which should meet the requirements of software users and which may be implemented not only by big companies but also by small and middle-size companies. Services Oriented Architecture (SOA) could be such a solution. SOA refers to a set of services, in the field of Internet and Intranet, called ldquoWeb Servicesrdquo. Being used to Internet services companies have also unanimously accepted a series of standards which support Web services and consequently their interest in using SOA has increased significantly. In this way a SOA can be a new alternative to the traditional integration technologies which are rigid, complex and very expensive.