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Web services, as the name suggests, is simply a software system that is specially designed to PROPAGATE communication between the CLIENT and server applications on WWW (World Wide Web). In simple words, it is the method of communication among two or more devices over a network. It allows multiple applications built on different programming LANGUAGES to COMMUNICATE with each other without any trouble. It uses the internet for direct application-to-application interaction, and also allows you to expose business logic using API.