M2M-Communication: From one Machine to Another

But what exactly are the machines doing?
They’re not talking since their communication has to be non-verbal by default.
They’re not having a conversation since they will hardly be chatting about topics like films or music.
Making contact fits better than communication and seems to hit the target dead-centre.
Systems of machines working together have been around for a while now. In these – let’s call them “classic systems” – an integrator has determined which components contact each other, and how they are supposed to accomplish this.