Semantic interoperability is one of those phrases that sounds more technical than it is, but if you strip away the jargon, it simply means this: systems that can communicate and actually understand each other. It’s the difference between having a room full of people shouting in different languages, and having a conversation where everyone speaks and listens fluently.
In buildings, semantic interoperability means that devices, systems, and software can share data that’s structured in a consistent way. Not just the numbers, but the meaning behind those numbers: what they represent, where they came from, how they relate to other systems, and how they should be used.