Definition

Service Integration Maturity Model (SIMM)

The Service Integration Maturity Model (SIMM) is a paradigm developed by IBM that defines the extent to which various services are integrated in a service-oriented architecture (SOA). In this context, a service is a component of an automated subprocess representing a unit of work done as part of a specific business function. The SIMM is one of larger class of methods known as SOA maturity models.

When properly implemented and followed, a SIMM can help an organization determine how well-developed its services, policies and governance are. This knowledge can lead to the evolution of improved services and more cost-effective business operations. The SIMM also helps diverse organizations to establish and maintain processes that allow them to work together. The emphasis is on processes rather than infrastructure -- in other words, the "how" rather than the "what."

Some IT professionals consider the SIMM to be an outgrowth of the Capability Maturity Model (CMM) originally conceived by the Software Engineering Institute (SEI) at Carnegie Mellon University.

Getting started with SIMM
To explore how the Service Integration Maturity Model is used in the enterprise, here are some additional resources:
Why you should forget maturity models: ZapThink analyst Ronald Schmelzer turns the classic SOA maturity model on its head, looking instead to measure agility around factors such as data structure, policy and infrastructure.
The SOA maturity model makeover: The result of a four-vendor effort, a new SOA maturity model breaks down the steps to become a service-oriented business into five levels, from building basic Web services to business process automation.

This was last updated in April 2007
Posted by: Margaret Rouse

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