At Level 0, called no interoperability, devices have no ability to exchange information. At Level 1, called foundational interoperability, devices can share data, but they cannot interpret it. At Level 2, called structural interoperability, devices can interpret data, but they cannot understand it. At this level, there are data formatting standards. At Level 3, called semantic interoperability, devices have reached a point where they can convey the meaning as well as the interpretation of the data. At Level 4, called organization interoperability, devices have the capability to share information across people and organizations.