What Is Common Information Model (computing)?

The Common Information Model (CIM) in computing is an open standard for describing managed elements in an IT environment as a consistent set of objects and their relationships. Published and maintained by the Distributed Management Task Force (DMTF), CIM defines a shared vocabulary and schema that allows management software from different vendors to describe, query, and configure hardware, operating systems, networks, applications, and services using a single conceptual framework. The standard ensures that management information collected from diverse sources can be interpreted consistently, regardless of the underlying platform or the vendor that produced it.

CIM emerged in the late 1990s as enterprise IT environments became too heterogeneous for proprietary management protocols to handle. The DMTF released the first CIM specification in 1996, and the model has been updated regularly since then, with schema version 2.56.0 released in January 2026. The standard draws on object-oriented design principles, treating managed resources as class instances with properties and methods, a structure familiar from languages such as C++ and Java.

Object-Oriented Schema and Metamodel

CIM organizes management information through three interconnected components. The CIM Specification defines the language syntax, naming conventions, and meta-schema used to express management models. The CIM Schema provides the actual class hierarchy, covering common managed elements such as computer systems, network interfaces, storage devices, software installations, and user accounts. The CIM Metamodel describes how new conformant classes can be constructed, extended with vendor-specific qualifiers, and integrated into the broader schema.

Classes in CIM are arranged in an inheritance hierarchy beginning with a Core Model, which captures abstract concepts applicable to all managed environments. Sub-schemas for systems, networks, devices, and applications extend the core, with provisions for vendor namespaces that allow proprietary extensions without breaking interoperability. Associations between classes represent relationships such as "component of," "depends on," or "realized by," enabling management software to traverse a graph of managed objects and understand how they relate.

Information Exchange and Interoperability

The CIM specification defines how management data is exchanged between management agents and managers, or between management systems, through a protocol-neutral data model. In practice, CIM data is most commonly transported using the WS-Management protocol (standardized as DMTF DSP0226) and its Web Services for Management (WS-Man) binding, which provides a SOAP-based mechanism for querying and controlling managed elements over standard HTTP infrastructure. Microsoft's Windows Management Instrumentation (WMI) is one of the most widely deployed implementations of CIM, giving Windows system administrators programmatic access to system configuration and performance data through the CIM class hierarchy.

The primary benefit of CIM for information exchange is that a management application written against the standard schema can work with implementations from different vendors without custom translation layers. An application that queries CIM classes for disk drive properties, for instance, will receive consistent data regardless of whether the underlying storage device is from a different manufacturer or runs a different firmware.

Applications

Common Information Model (computing) has applications in a range of fields, including:

• Enterprise IT system management and configuration across heterogeneous server environments
• Cloud and virtualization management platforms that monitor resource pools from multiple vendors
• Network management systems that inventory and configure routers, switches, and security devices
• Security information and event management (SIEM) systems that correlate data from diverse infrastructure components
• Data center automation and orchestration tools that rely on a common object model to drive provisioning workflows