Interface Description Language

It’s a format used to describe the interface of an application(App1) in a language independent way so that any application(App2) can use this format and communicate with this application(App1).

For example, An application(App1) is written in Java language assume this as web services and an another application(App2) wants to consume the App1 services. So we have to define and describe the App1 services in IDL language so that this can be used by other application(App2) easily.

Few of IDL languages are given below,

Web Services Description Language
Web Application Description Language
RESTful Service Description Language
Protocol Buffer
Apache Thrift
Avro IDL


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