Methodology of construction of web services of distributed platform-independent computer-aided design

Problems of introduction of Internet technologies into systems of automated design are considered by transition to the distributed systems realizing the tasks of communication and information exchange between applications. Such independently controlled applications are autonomous and can cooperate with each other during performance of the common task. Internet technologies protocols represent a reliable base for linking subsystems and do not demand coordinated use of resources that are located in different nodes of a network which simplifies the processes of construction and operation of distributed systems of automated design. The main requirement for realizating such distributed system is coordination of interfaces that connect separate subsystems. The paper provides a comparative analysis of possible ways of creating the software of distributed platform-independent systems of automated design on the basis of web services technology. The paper presents the description of interaction of the basic protocols used by of web services in distributed systems of automated design.