The iSHARE Trust Framework aims to support multiple interaction models, of which Machine-to-Machine (M2M) is one. M2M interaction can be characterised as communication between machines, without interference by a human. In contemporary data communication, there is a heavy reliance on M2M interaction.
Example:
Every day, the ERP system (machine) of party A requests a status update from the ERP system (machine) of party B. Party B's ERP system automatically responds with the requested status update. No humans are needed to interfere.