What is service?

Service, in this case, is an essential concept of SOA. It can be a piece of code, program, or software that provides some functionality to other system components. This piece of code can interact directly with the database or indirectly through another service. Furthermore, it can be consumed by clients directly, where the client may either be a website, desktop app, mobile app, or any other device app. Refer to the following diagram:

Service refers to a type of functionality exposed for consumption by other systems (generally referred to as clients/client applications). As mentioned earlier, it can be represented by a piece ...

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