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Two systems or components have been described by interoperability specifications where working interaction can be engaged. Two IoT devices are examples. The focus is more on semantic interaction with a process that might focus on viewpoints like (1) information exchanges, (2) interactions, and (3) others.

The IoT devices that are connected via protocol with interoperability specification through network includes:

• The device capabilities can be described via semantic descriptions such as temperature measurement. 
• The protocols can be described via semantic descriptions such as Wi-Fi for interactions.
• Protocol data units are described via semantic descriptions such as the Celsius data unit or exchanged information.  

The benefits of semantic interoperability: —

• The interoperability specification has been improved with the quality of a systematic process that can be applied for interoperability definition.
• As a reference, the specification which resulted is used for interpreting the problem that can be solved. It is mainly used for further verification and validation where a formalized specification is available. 
• The specifications can be maintained and extended more straightforwardly. The impact of the modification is difficult to assess in a textual specification of interoperability where a formalized specification is easier to do. 

Source:- Middleware Solutions for Wireless Internet of Things.