What is OID?

An Object Identifier (OID) is a globally unique, hierarchical naming scheme used to identify any kind of object. In computing, they're often used in protocols and standards, particularly in areas like security (e.g., certificates), networking (e.g., SNMP), and healthcare informatics (e.g., HL7). OIDs provide a structured way to assign unique identifiers, ensuring that different organizations can define and manage their own namespaces without collision. They are represented as a series of numbers separated by dots, reflecting the hierarchical structure.